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This lists the [[character table]]s for the more common [[point groups in three dimensions|molecular point groups]] used in the study of [[molecular symmetry]]. These tables are based on the [[group theory|group-theoretical]] treatment of the [[symmetry]] operations present in common [[molecule]]s, and are useful in molecular [[spectroscopy]] and [[quantum chemistry]]. Information regarding the use of the tables, as well as more extensive lists of them, can be found in the references.<ref>{{cite book | last = Drago | first = Russell S. | title = Physical Methods in Chemistry | publisher = W.B. Saunders Company | year = 1977 | isbn = 0-7216-3184-3}}</ref><ref>{{cite book | last=Cotton | first = F. Albert | title = Chemical Applications of Group Theory | publisher = John Wiley & Sons: New York | year = 1990 | isbn = 0-471-51094-7}}</ref><ref>{{cite web | last = Gelessus | first = Achim | title = Character tables for chemically important point groups | publisher = Jacobs University, Bremin; Computational Laboratory for Analysis, Modeling, and Visualization | date=2007-07-12 | url=http://symmetry.jacobs-university.de/ | accessdate=2007-07-12 }}</ref><ref name="ShirtsFixJCE">{{cite journal | last=Shirts | first=Randall B. | title=Correcting Two Long-Standing Errors in Point Group Symmetry Character Tables | journal=[[Journal of Chemical Education]] | volume=84 | issue=1882 | publisher=[[American Chemical Society]] | year=2007 | url=http://jchemed.chem.wisc.edu/Journal/Issues/2007/Nov/abs1882.html | accessdate= 2007-10-16 | doi=10.1021/ed084p1882 | pages=1882|bibcode = 2007JChEd..84.1882S }}</ref><ref>{{cite web | url=http://www.webqc.org/symmetry.php | title=POINT GROUP SYMMETRY CHARACTER TABLES | last= Vanovschi | first=Vitalii | accessdate=2008-10-29 | publisher=WebQC.Org}}</ref> | |||
== Notation == | |||
For each non-linear group, the tables give the most standard notation of the finite group isomorphic to the point group, followed by the [[Order (group theory)|order of the group]] (number of invariant symmetry operations). The finite group notation used is: Z<sub>n</sub>: [[cyclic group]] of order ''n'', D<sub>n</sub>: [[dihedral group]] isomorphic to the symmetry group of an ''n''–sided regular polygon, S<sub>n</sub>: [[symmetric group]] on ''n'' letters, and A<sub>n</sub>: [[alternating group]] on ''n'' letters. | |||
The character tables then follow for all groups. The rows of the character tables correspond to the irreducible representations of the group, with their conventional names in the left margin. The naming conventions are as follows: | |||
* ''A'' and ''B'' are singly degenerate representations, with the former transforming symmetrically around the principal axis of the group, and the latter asymmetrically. ''E'', ''T'', ''G'', ''H'', ... are doubly, triply, quadruply, quintuply, ... degenerate representations. | |||
* ''g'' and ''u'' subscripts denote symmetry and antisymmetry, respectively, with respect to a center of inversion. Subscripts "1" and "2" denote symmetry and antisymmetry, respectively, with respect to a nonprincipal rotation axis. Higher numbers denote additional representations with such asymmetry. | |||
* Single prime ( ' ) and double prime ( <nowiki>''</nowiki> ) superscripts denote symmetry and antisymmetry, respectively, with respect to a horizontal mirror plane σ<sub>h</sub>, one perpendicular to the principal rotation axis. | |||
All but the two rightmost columns correspond to the [[symmetry operation]]s which are invariant in the group. In the case of sets of similar operations with the same characters for all representations, they are presented as one column, with the number of such similar operations noted in the heading. | |||
The body of the tables contain the characters in the respective irreducible representations for each respective symmetry operation, or set of symmetry operations. | |||
The two rightmost columns indicate which irreducible representations describe the symmetry transformations of the three Cartesian coordinates (''x'', ''y'' and ''z''), rotations about those three coordinates (''R<sub>x</sub>'', ''R<sub>y</sub>'' and ''R<sub>z</sub>''), and functions of the quadratic terms of the coordinates(''x''<sup>2</sup>, ''y''<sup>2</sup>, ''z''<sup>2</sup>, ''xy'', ''xz'', and ''yz''). | |||
The symbol ''i'' used in the body of the table denotes the [[imaginary unit]]: ''i''<sup> 2</sup> = −1. Used in a column heading, it denotes the operation of inversion. A superscripted uppercase "C" denotes [[Complex conjugate|complex conjugation]]. | |||
== Character tables == | |||
=== Nonaxial symmetries === | |||
These groups are characterized by a lack of a proper rotation axis, noting that a <math>C_1</math> rotation is considered the identity operation. These groups have [[Involution (mathematics)|involutional]] symmetry: the only nonidentity operation, if any, is its own inverse. | |||
In the group <math>C_1</math>, all functions of the Cartesian coordinates and rotations about them transform as the <math>A</math> irreducible representation. | |||
{| class="wikitable" centered | |||
! Point Group !! Canonical Group !! Order !! Character Table | |||
|- | |||
| <math>C_1</math> || <math>Z_1</math> || <math>1</math> | |||
|| | |||
{| class="wikitable" centered | |||
| || <math>E</math> | |||
|- | |||
| <math>A</math> || <math>1</math> | |||
|} | |||
|- | |||
| <math>C_i</math> || <math>Z_2</math> || 2 | |||
|| | |||
{| class="wikitable" centered | |||
| || <math>E</math> || <math>i</math> || || | |||
|- | |||
| <math>A_g</math> || <math>1</math> || <math>1</math> | |||
| <math>R_x</math>, <math>R_y</math>, <math>R_z</math> | |||
| <math>x^2</math>, <math>y^2</math>, <math>z^2</math>, <math>xy</math>, <math>xz</math>, <math>yz</math> | |||
|- | |||
| <math>A_u</math> || <math>1</math> || <math>-1</math> || <math>x</math>, <math>y</math>, <math>z</math> || | |||
|} | |||
|- | |||
| <math>C_s</math> || <math>Z_2</math> || <math>2</math> | |||
|| | |||
{| class="wikitable" centered | |||
| || <math>E</math> || <math>\sigma_h</math> || || | |||
|- | |||
| <math>A'</math> || <math>1</math> || <math>1</math> | |||
| <math>x</math>, <math>y</math>, <math>R_z</math> | |||
| <math>x^2</math>, <math>y^2</math>, <math>z^2</math>, <math>xy</math> | |||
|- | |||
| <math>A''</math> || <math>1</math> || <math>-1</math> | |||
| <math>z</math>, <math>R_x</math>, <math>R_y</math> || <math>yz</math>, <math>xz</math> | |||
|} | |||
|- | |||
|} | |||
=== Cyclic symmetries === | |||
The families of groups with these symmetries have only one rotation axis. | |||
==== Cyclic groups (''C''<sub>n</sub>) ==== | |||
The cyclic groups are denoted by ''C''<sub>n</sub>. These groups are characterized by an ''n''-fold proper rotation axis ''C''<sub>n</sub>. The ''C''<sub>1</sub> group is covered in the [[#Nonaxial groups|nonaxial groups]] section. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>Group !! Order !! Character Table | |||
|- | |||
| ''C''<sub>2</sub> || Z<sub>2</sub> || 2 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>2</sub><sup> </sup> || colspan="2" | | |||
|- | |||
| A || 1 || 1 || ''R<sub>z</sub>'', ''z'' | |||
| ''x''<sup>2</sup>, ''y''<sup>2</sup>, ''z''<sup>2</sup>, ''xy'' | |||
|- | |||
| B || 1 || −1 || ''R<sub>x</sub>'', ''R<sub>y</sub>'', ''x'', ''y'' | |||
| ''xz'', ''yz'' | |||
|} | |||
|- | |||
| ''C''<sub>3</sub> || Z<sub>3</sub> || 3 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>3</sub><sup> </sup> || ''C''<sub>3</sub><sup>2</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /3</sup> | |||
|- | |||
| A || 1 || 1 || 1 || ''R<sub>z</sub>'', ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup> | |||
|- | |||
| E || 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), <br> (''x'', ''y'') | |||
| (''x''<sup>2</sup> - ''y''<sup>2</sup>, ''xy''), <br> (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>4</sub> || Z<sub>4</sub> || 4 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || ''C''<sub>4</sub><sup>3</sup> | |||
| colspan="2" | | |||
|- | |||
| A || 1 || 1 || 1 || 1 ||''R<sub>z</sub>'', ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B || 1 || −1 || 1 || −1 || | |||
| ''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'' | |||
|- | |||
| E || 1 <br> 1 || ''i'' <br> −''i'' || −1 <br> −1 || −''i'' <br> ''i'' | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), <br> (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>5</sub> || Z<sub>5</sub> || 5 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| ''C''<sub>5</sub><sup> </sup> || ''C''<sub>5</sub><sup>2</sup> | |||
| ''C''<sub>5</sub><sup>3</sup> || ''C''<sub>5</sub><sup>4</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /5</sup> | |||
|- | |||
| A || 1 || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'', ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| E<sub>1</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), <br> (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| || (''x''<sup>2</sup> - ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>6</sub> || Z<sub>6</sub> || 6 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| ''C''<sub>6</sub><sup> </sup> || ''C''<sub>3</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || ''C''<sub>3</sub><sup>2</sup> | |||
| ''C''<sub>6</sub><sup>5</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /6</sup> | |||
|- | |||
| A || 1 || 1 || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'', ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B || 1 || −1 || 1 || −1 || 1 || −1 || || | |||
|- | |||
| E<sub>1</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), <br> (''x'', ''y'') | |||
| (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>8</sub> || Z<sub>8</sub> || 8 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| ''C''<sub>8</sub><sup> </sup> || ''C''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>8</sub><sup>3</sup> || ''C''<sub>2</sub><sup> </sup> | |||
| ''C''<sub>8</sub><sup>5</sup> || ''C''<sub>4</sub><sup>3</sup> | |||
| ''C''<sub>8</sub><sup>7</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /8</sup> | |||
|- | |||
| A || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'', ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B || 1 || −1 || 1 || −1 || 1 || −1 || 1 || −1 || || | |||
|- | |||
| E<sub>1</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''i'' <br> −''i'' | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| −''i'' <br> ''i'' | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), <br> (''x'', ''y'') | |||
| (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> | |||
| 1 <br> 1 | |||
| ''i'' <br> −''i'' | |||
| −1 <br> −1 | |||
| −''i'' <br> ''i'' | |||
| 1 <br> 1 | |||
| ''i'' <br> −''i'' | |||
| −1 <br> −1 | |||
| −''i'' <br> ''i'' | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| E<sub>3</sub> | |||
| 1 <br> 1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| ''i'' <br> −''i'' | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −''i'' <br> ''i'' | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| || | |||
|- | |||
|} | |||
|- | |||
|} | |||
==== Reflection groups (''C''<sub>nh</sub>) ==== | |||
The reflection groups are denoted by ''C''<sub>nh</sub>. These groups are characterized by i) an ''n''-fold proper rotation axis ''C''<sub>n</sub>; ii) a mirror plane ''σ<sub>h</sub>'' normal to ''C''<sub>n</sub>. The ''C''<sub>1''h''</sub> group is the same as the ''C''<sub>s</sub> group in the [[#Nonaxial groups|nonaxial groups]] section. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !! Order !! Character Table | |||
|- | |||
| ''C''<sub>2''h''</sub> || Z<sub>2</sub> × Z<sub>2</sub> || 4 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>2</sub><sup> </sup> | |||
| ''i'' || ''σ<sub>h</sub><sup> </sup>'' || colspan="2" | | |||
|- | |||
| A<sub>g</sub> || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'' | |||
| ''x''<sup>2</sup>, ''y''<sup>2</sup>, ''z''<sup>2</sup>, ''xy'' | |||
|- | |||
| B<sub>g</sub> || 1 || −1 || 1 || −1 || ''R<sub>x</sub>'', ''R<sub>y</sub>'' | |||
| ''xz'', ''yz'' | |||
|- | |||
| A<sub>u</sub> || 1 || 1 || −1 || −1 || ''z'' || | |||
|- | |||
| B<sub>u</sub> || 1 || −1 || −1 || 1 || ''x'', ''y'' || | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>3''h''</sub> || Z<sub>6</sub> || 6 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>3</sub><sup> </sup> | |||
| ''C''<sub>3</sub><sup>2</sup> || ''σ<sub>h</sub><sup> </sup>'' | |||
| ''S''<sub>3</sub><sup> </sup> || ''S''<sub>3</sub><sup>5</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /3</sup> | |||
|- | |||
| A' || 1 || 1 || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| E' || align="center" | 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| (''x'', ''y'') || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| A<nowiki>''</nowiki> || 1 || 1 || 1 || −1 || −1 || −1 || ''z'' || | |||
|- | |||
| E<nowiki>''</nowiki> || align="center" | 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>4''h''</sub> || Z<sub>2</sub> × Z<sub>4</sub> || 8 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || ''C''<sub>4</sub><sup>3</sup> | |||
| ''i'' || ''S''<sub>4</sub><sup>3</sup> || ''σ<sub>h</sub><sup> </sup>'' | |||
| ''S''<sub>4</sub><sup> </sup> || colspan="2" | | |||
|- | |||
| A<sub>g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| ''R<sub>z</sub>'' || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B<sub>g</sub> || 1 || −1 || 1 || −1 || 1 || −1 || 1 || −1 | |||
| || ''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'' | |||
|- | |||
| E<sub>g</sub> || 1 <br> 1 || ''i'' <br> −''i'' || −1 <br> −1 | |||
| −''i'' <br> ''i'' || 1 <br> 1 || ''i'' <br> −''i'' | |||
| −1 <br> −1 || −''i'' <br> ''i'' | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| A<sub>u</sub> || 1 || 1 || 1 || 1 || −1 || −1 || −1 || −1 || ''z'' || | |||
|- | |||
| B<sub>u</sub> || 1 || −1 || 1 || −1 || −1 || 1 || −1 || 1 || || | |||
|- | |||
| E<sub>u</sub> || 1 <br> 1 || ''i'' <br> −''i'' || −1 <br> −1 | |||
| −''i'' <br> ''i'' || −1 <br> −1 || −''i'' <br> ''i'' | |||
| 1 <br> 1 || ''i'' <br> −''i'' | |||
| (''x'', ''y'') || | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>5''h''</sub> || Z<sub>10</sub> || 10 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| ''C''<sub>5</sub><sup> </sup> || ''C''<sub>5</sub><sup>2</sup> | |||
| ''C''<sub>5</sub><sup>3</sup> || ''C''<sub>5</sub><sup>4</sup> | |||
| ''σ<sub>h</sub><sup> </sup>'' || ''S''<sub>5</sub><sup> </sup> | |||
| ''S''<sub>5</sub><sup>7</sup> || ''S''<sub>5</sub><sup>3</sup> | |||
| ''S''<sub>5</sub><sup>9</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /5</sup> | |||
|- | |||
| A' || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| E<sub>1</sub>' | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| (''x'', ''y'') || | |||
|- | |||
| E<sub>2</sub>' | |||
| 1 <br> 1 | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| 1 <br> 1 | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| || (''x''<sup>2</sup> - ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| A<nowiki>''</nowiki> || 1 || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || −1 | |||
| ''z'' || | |||
|- | |||
| E<sub>1</sub><nowiki>''</nowiki> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> -''θ''<sup>C</sup> | |||
| −''θ''<sup>2</sup> <br> −(''θ''<sup>2</sup>)<sup>C</sup> | |||
| −(''θ''<sup>2</sup>)<sup>C</sup> <br> −''θ''<sup>2</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub><nowiki>''</nowiki> | |||
| 1 <br> 1 | |||
| ''θ''<sup>2</sup> <br> (''θ''<sup>2</sup>)<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| (''θ''<sup>2</sup>)<sup>C</sup> <br> ''θ''<sup>2</sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup>2</sup> <br> −(''θ''<sup>2</sup>)<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| −(''θ''<sup>2</sup>)<sup>C</sup> <br> −''θ''<sup>2</sup> | |||
| || | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>6''h''</sub> || Z<sub>2</sub> × Z<sub>6</sub> || 12 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| ''C''<sub>6</sub><sup> </sup> || ''C''<sub>3</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || ''C''<sub>3</sub><sup>2</sup> | |||
| ''C''<sub>6</sub><sup>5</sup> || ''i'' || ''S''<sub>3</sub><sup>5</sup> | |||
| ''S''<sub>6</sub><sup>5</sup> || ''σ<sub>h</sub><sup> </sup>'' | |||
| ''S''<sub>6</sub><sup> </sup> || ''S''<sub>3</sub><sup> </sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /6</sup> | |||
|- | |||
| A<sub>g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| ''R<sub>z</sub>'' || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B<sub>g</sub> || 1 || −1 || 1 || −1 || 1 || −1 | |||
| 1 || −1 || 1 || −1 || 1 || −1 | |||
| || | |||
|- | |||
| E<sub>1g</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2g</sub> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| A<sub>u</sub> || 1 || 1 || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || −1 || −1 | |||
| ''z'' || | |||
|- | |||
| B<sub>u</sub> || 1 || −1 || 1 || −1 || 1 || −1 | |||
| −1 || 1 || −1 || 1 || −1 || 1 | |||
| || | |||
|- | |||
| E<sub>1u</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| (''x'', ''y'') || | |||
|- | |||
| E<sub>2u</sub> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| −1 <br> −1 | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −1 <br> −1 | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| || | |||
|} | |||
|- | |||
|} | |||
==== Pyramidal groups (''C''<sub>nv</sub>) ==== | |||
The pyramidal groups are denoted by ''C''<sub>nv</sub>. These groups are characterized by i) an ''n''-fold proper rotation axis ''C''<sub>n</sub>; ii) ''n'' mirror planes ''σ<sub>v</sub>'' which contain ''C''<sub>n</sub>. The ''C''<sub>1''v''</sub> group is the same as the ''C''<sub>s</sub> group in the [[#Nonaxial groups|nonaxial groups]] section. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !!Order !! Character Table | |||
|- | |||
| ''C''<sub>2''v''</sub> || Z<sub>2</sub> × Z<sub>2</sub><br> (=D<sub>2</sub>) || 4 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>2</sub><sup> </sup> | |||
| ''σ<sub>v</sub><sup> </sup>'' | |||
| ''σ<sub>v</sub>'<sup> </sup>'' | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || ''z'' | |||
| ''x''<sup>2</sup>, ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || −1 || −1 || ''R<sub>z</sub>'' || ''xy'' | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || −1 || ''R<sub>y</sub>'', ''x'' || ''xz'' | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || −1 || 1 || ''R<sub>x</sub>'', ''y'' || ''yz'' | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>3''v''</sub> || D<sub>3</sub> || 6 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || 2 ''C''<sub>3</sub><sup> </sup> | |||
| 3 ''σ<sub>v</sub><sup> </sup>'' | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || −1 || ''R<sub>z</sub>'' || | |||
|- | |||
| E || 2 || −1 || 0 || (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy''), (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>4''v''</sub> || D<sub>4</sub> || 8 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || 2 ''C''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 2 ''σ<sub>v</sub><sup> </sup>'' | |||
| 2 ''σ<sub>d</sub><sup> </sup>'' || colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 | |||
| ''z'' || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || −1 || −1 || ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || 1 || −1 | |||
| || ''x''<sup>2</sup> − ''y''<sup>2</sup> | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || 1 || −1 || 1 || || ''xy'' | |||
|- | |||
| E || 2 || 0 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>5''v''</sub> || D<sub>5</sub> || 10 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>5</sub><sup> </sup> || 2 ''C''<sub>5</sub><sup>2</sup> | |||
| 5 ''σ<sub>v</sub><sup> </sup>'' || colspan="2" | ''θ'' = 2π/5 | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || −1 || ''R<sub>z</sub>'' || | |||
|- | |||
| E<sub>1</sub> || 2 || 2 cos(''θ'') || 2 cos(2''θ'') || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> || 2 || 2 cos(2''θ'') || 2 cos(''θ'') || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
|} | |||
|- | |||
| ''C''<sub>6''v''</sub> || D<sub>6</sub> || 12 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>6</sub><sup> </sup> || 2 ''C''<sub>3</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 3 ''σ<sub>v</sub><sup> </sup>'' | |||
| 3 ''σ<sub>d</sub><sup> </sup>'' || colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || 1 | |||
| ''z'' || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || 1 || −1 || −1 || ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || −1 || 1 || −1 || || | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || 1 || −1 || −1 || 1 || || | |||
|- | |||
| E<sub>1</sub> ||2 || 1 || −1 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> ||2 || −1 || −1 || 2 || 0 || 0 || | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|} | |||
|- | |||
|} | |||
==== Improper rotation groups (''S''<sub>n</sub>) ==== | |||
The improper rotation groups are denoted by ''S''<sub>n</sub>. These groups are characterized by an ''n''-fold improper rotation axis ''S''<sub>n</sub>, where ''n'' is necessarily even. The ''S''<sub>2</sub> group is the same as the ''C''<sub>s</sub> group in the [[#Nonaxial groups|nonaxial groups]] section. | |||
The S<sub>8</sub> table reflects the 2007 discovery of errors in older references.<ref name="ShirtsFixJCE"/> Specifically, (''R<sub>x</sub>'', ''R<sub>y</sub>'') transform not as E<sub>1</sub> but rather as E<sub>3</sub>. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !! Order !! Character Table | |||
|- | |||
| ''S''<sub>4</sub> || Z<sub>4</sub> || 4 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''S''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || ''S''<sub>4</sub><sup>3</sup> | |||
| colspan="2" | | |||
|- | |||
| A || 1 || 1 || 1 || 1 ||''R<sub>z</sub>'', | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B || 1 || −1 || 1 || −1 || ''z'' | |||
| ''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'' | |||
|- | |||
| E || 1 <br> 1 || ''i'' <br> −''i'' || −1 <br> −1 | |||
| −''i'' <br> ''i'' | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), <br> (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''S''<sub>6</sub> || Z<sub>6</sub> || 6 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| ''S''<sub>6</sub><sup> </sup> || ''C''<sub>3</sub><sup> </sup> | |||
| ''i'' || ''C''<sub>3</sub><sup>2</sup> || ''S''<sub>6</sub><sup>5</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /6</sup> | |||
|- | |||
| A<sub>g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| E<sub>g</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| 1 <br> 1 | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy''), <br> (''xz'', ''yz'') | |||
|- | |||
| A<sub>u</sub> || 1 || −1 || 1 || −1 || 1 || −1 || ''z'' || | |||
|- | |||
| E<sub>u</sub> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −1 <br> −1 | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| (''x'', ''y'') || | |||
|- | |||
|} | |||
|- | |||
| ''S''<sub>8</sub> || Z<sub>8</sub> || 8 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| ''S''<sub>8</sub><sup> </sup> || ''C''<sub>4</sub><sup> </sup> | |||
| ''S''<sub>8</sub><sup>3</sup> || ''i'' | |||
| ''S''<sub>8</sub><sup>5</sup> || ''C''<sub>4</sub><sup>2</sup> | |||
| ''S''<sub>8</sub><sup>7</sup> | |||
| colspan="2" | ''θ'' = ''e''<sup>2π''i'' /8</sup> | |||
|- | |||
| A || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || ''R<sub>z</sub>'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B || 1 || −1 || 1 || −1 || 1 || −1 || 1 || −1 || ''z'' || | |||
|- | |||
| E<sub>1</sub> | |||
| 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''i'' <br> −''i'' | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| −''i'' <br> ''i'' | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> | |||
| 1 <br> 1 || ''i'' <br> −''i'' || −1 <br> −1 | |||
| −''i'' <br> ''i'' || 1 <br> 1 || ''i'' <br> −''i'' | |||
| −1 <br> −1 || −''i'' <br> ''i'' | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| E<sub>3</sub> | |||
| 1 <br> 1 | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −''i'' <br> ''i'' | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| −1 <br> −1 | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| ''i'' <br> −''i'' | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
|} | |||
=== Dihedral symmetries === | |||
The families of groups with these symmetries are characterized by 2-fold proper rotation axes normal to a principal rotation axis. | |||
==== Dihedral groups (''D''<sub>n</sub>) ==== | |||
The dihedral groups are denoted by ''D''<sub>n</sub>. These groups are characterized by i) an ''n''-fold proper rotation axis ''C''<sub>n</sub>; ii) ''n'' 2-fold proper rotation axes ''C''<sub>2</sub> normal to ''C''<sub>n</sub>. The ''D''<sub>1</sub> group is the same as the ''C''<sub>2</sub> group in the [[cyclic groups]] section. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !!Order !! Character Table | |||
|- | |||
| ''D''<sub>2</sub> || Z<sub>2</sub> × Z<sub>2</sub><br>(=D<sub>2</sub>) || 4 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>2</sub><sup> </sup>(''z'') | |||
| ''C''<sub>2</sub><sup> </sup>(''x'') | |||
| ''C''<sub>2</sub><sup> </sup>(''y'') || colspan="2" | | |||
|- | |||
| A || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup>, ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B<sub>1</sub> || 1 || 1 || −1 || −1 || ''R<sub>z</sub>'', ''z'' || ''xy'' | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || −1 || 1 || ''R<sub>y</sub>'', ''y'' || ''xz'' | |||
|- | |||
| B<sub>3</sub> || 1 || −1 || 1 || −1 || ''R<sub>x</sub>'', ''x'' || ''yz'' | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>3</sub> || D<sub>3</sub> || 6 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || 2 ''C''<sub>3</sub><sup> </sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> || colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || −1 || ''R<sub>z</sub>'', ''z'' || | |||
|- | |||
| E || 2 || −1 || 0 || (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy''), (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>4</sub> || D<sub>4</sub> || 8 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || 2 ''C''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 2 ''C''<sub>2</sub>'<sup> </sup> | |||
| 2 ''C''<sub>2</sub><nowiki>''</nowiki><sup> </sup> | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || −1 || −1 || ''R<sub>z</sub>'', ''z'' || | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || 1 || −1 | |||
| || ''x''<sup>2</sup> − ''y''<sup>2</sup> | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || 1 || −1 || 1 || || ''xy'' | |||
|- | |||
| E || 2 || 0 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>5</sub> || D<sub>5</sub> || 10 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>5</sub><sup> </sup> || 2 ''C''<sub>5</sub><sup>2</sup> | |||
| 5 ''C''<sub>2</sub><sup> </sup> || colspan="2" | ''θ''=2π/5 | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || −1 || ''R<sub>z</sub>'', ''z'' || | |||
|- | |||
| E<sub>1</sub> || 2 || 2 cos(''θ'') || 2 cos(2''θ'') || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> || 2 || 2 cos(2''θ'') || 2 cos(''θ'') || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>6</sub> || D<sub>6</sub> || 12 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>6</sub><sup> </sup> || 2 ''C''<sub>3</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 3 ''C''<sub>2</sub>'<sup> </sup> | |||
| 3 ''C''<sub>2</sub><nowiki>''</nowiki><sup> </sup> | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || 1 || −1 || −1 | |||
| ''R<sub>z</sub>'', ''z'' || | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || −1 || 1 || −1 || || | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || 1 || −1 || −1 || 1 || || | |||
|- | |||
| E<sub>1</sub> ||2 || 1 || −1 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub> ||2 || −1 || −1 || 2 || 0 || 0 || | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|} | |||
|- | |||
|} | |||
==== Prismatic groups (''D''<sub>nh</sub>) ==== | |||
The prismatic groups are denoted by ''D''<sub>nh</sub>. These groups are characterized by i) an ''n''-fold proper rotation axis ''C''<sub>n</sub>; ii) ''n'' 2-fold proper rotation axes ''C''<sub>2</sub> normal to ''C''<sub>n</sub>; iii) a mirror plane ''σ<sub>h</sub>'' normal to ''C''<sub>n</sub> and containing the ''C''<sub>2</sub>s. The ''D''<sub>1''h''</sub> group is the same as the ''C''<sub>2''v''</sub> group in the [[#Pyramidal groups|pyramidal groups]] section. | |||
The D<sub>8''h''</sub> table reflects the 2007 discovery of errors in older references.<ref name="ShirtsFixJCE"/> Specifically, symmetry operation column headers 2S<sub>8</sub> and 2S<sub>8</sub><sup>3</sup> were reversed in the older references. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !!Order !! Character Table | |||
|- | |||
| ''D''<sub>2''h''</sub> | |||
| Z<sub>2</sub>×Z<sub>2</sub>×Z<sub>2</sub><br>(=Z<sub>2</sub>×D<sub>2</sub>) || 8 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || ''C''<sub>2</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup>(x) | |||
| ''C''<sub>2</sub><sup> </sup>(y) || ''i'' | |||
| ''σ(xy)<sub> </sub><sup> </sup>'' | |||
| ''σ(xz)<sub> </sub><sup> </sup>'' | |||
| ''σ(yz)<sub> </sub><sup> </sup>'' || colspan="2" | | |||
|- | |||
| A<sub>g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup>, ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| B<sub>1g</sub> || 1 || 1 || −1 || −1 || 1 || 1 || −1 || −1 | |||
| ''R<sub>z</sub>'' || ''xy'' | |||
|- | |||
| B<sub>2g</sub> || 1 || −1 || −1 || 1 || 1 || −1 || 1 || −1 | |||
| ''R<sub>y</sub>'' || ''xz'' | |||
|- | |||
| B<sub>3g</sub> || 1 || −1 || 1 || −1 || 1 || −1 || −1 || 1 | |||
| ''R<sub>x</sub>'' || ''yz'' | |||
|- | |||
| A<sub>u</sub> || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || || | |||
|- | |||
| B<sub>1u</sub> || 1 || 1 || −1 || −1 | |||
| −1 || −1 || 1 || 1 || ''z'' || | |||
|- | |||
| B<sub>2u</sub> || 1 || −1 || −1 || 1 | |||
| −1 || 1 || −1 || 1 || ''y'' || | |||
|- | |||
| B<sub>3u</sub> || 1 || −1 || 1 || −1 | |||
| −1 || 1 || 1 || −1 || ''x'' || | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>3''h''</sub> || D<sub>6</sub> || 12 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || 2 ''C''<sub>3</sub><sup> </sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> || ''σ<sub>h</sub><sup> </sup>'' | |||
| 2 ''S''<sub>3</sub><sup> </sup> || 3 ''σ<sub>v</sub><sup> </sup>'' | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub>' || 1 || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub>' || 1 || 1 || −1 || 1 || 1 || −1 || ''R<sub>z</sub>'' || | |||
|- | |||
| E' || 2 || −1 || 0 || 2 || −1 || 0 || (''x'', ''y'') | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| A<sub>1</sub><nowiki>''</nowiki> || 1 || 1 || 1 || −1 || −1 || −1 | |||
| || | |||
|- | |||
| A<sub>2</sub><nowiki>''</nowiki> || 1 || 1 || −1 || −1 || −1 || 1 | |||
| ''z'' || | |||
|- | |||
| E<nowiki>''</nowiki> || 2 || −1 || 0 || −2 || 1 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>4''h''</sub> || Z<sub>2</sub>×D<sub>4</sub> || 16 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E || 2 ''C''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 2 ''C''<sub>2</sub>'<sup> </sup> | |||
| 2 ''C''<sub>2</sub><nowiki>''</nowiki><sup> </sup> || ''i'' | |||
| 2 ''S''<sub>4</sub><sup> </sup> || ''σ<sub>h</sub><sup> </sup>'' | |||
| 2 ''σ<sub>v</sub><sup> </sup>'' | |||
| 2 ''σ<sub>d</sub><sup> </sup>'' || colspan="2" | | |||
|- | |||
| A<sub>1g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2g</sub> || 1 || 1 || 1 || −1 || −1 | |||
| 1 || 1 || 1 || −1 || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1g</sub> || 1 || −1 || 1 || 1 || −1 | |||
| 1 || −1 || 1 || 1 || −1 | |||
| || ''x''<sup>2</sup> − ''y''<sup>2</sup> | |||
|- | |||
| B<sub>2g</sub> || 1 || −1 || 1 || −1 || 1 | |||
| 1 || −1 || 1 || −1 || 1 | |||
| || ''xy'' | |||
|- | |||
| E<sub>g</sub> || 2 || 0 || −2 || 0 || 0 || 2 || 0 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| A<sub>1u</sub> || 1 || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || −1 | |||
| || | |||
|- | |||
| A<sub>2u</sub> || 1 || 1 || 1 || −1 || −1 | |||
| −1 || −1 || −1 || 1 || 1 | |||
| ''z'' || | |||
|- | |||
| B<sub>1u</sub> || 1 || −1 || 1 || 1 || −1 | |||
| −1 || 1 || −1 || −1 || 1 | |||
| || | |||
|- | |||
| B<sub>2u</sub> || 1 || −1 || 1 || −1 || 1 | |||
| −1 || 1 || −1 || 1 || −1 | |||
| || | |||
|- | |||
| E<sub>u</sub> || 2 || 0 || −2 || 0 || 0 || −2 || 0 || 2 || 0 || 0 | |||
| (''x'', ''y'') || | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>5''h''</sub> || D<sub>10</sub> || 20 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>5</sub><sup> </sup> || 2 ''C''<sub>5</sub><sup>2</sup> | |||
| 5 ''C''<sub>2</sub><sup> </sup> | |||
| ''σ<sub>h</sub><sup> </sup>'' || 2 ''S''<sub>5</sub><sup> </sup> | |||
| 2 ''S''<sub>5</sub><sup>3</sup> || 5 ''σ<sub>v</sub><sup> </sup>'' | |||
| colspan="2" | ''θ''=2π/5 | |||
|- | |||
| A<sub>1</sub>' || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub>' || 1 || 1 || 1 || −1 || 1 || 1 || 1 || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| E<sub>1</sub>' || 2 || 2 cos(''θ'') || 2 cos(2''θ'') || 0 || 2 | |||
| 2 cos(''θ'') || 2 cos(2''θ'') || 0 || (''x'', ''y'') || | |||
|- | |||
| E<sub>2</sub>' || 2 || 2 cos(2''θ'') || 2 cos(''θ'') || 0 || 2 | |||
| 2 cos(2''θ'') || 2 cos(''θ'') || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| A<sub>1</sub><nowiki>''</nowiki> || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 | |||
| || | |||
|- | |||
| A<sub>2</sub><nowiki>''</nowiki> || 1 || 1 || 1 || −1 | |||
| −1 || −1 || −1 || 1 | |||
| ''z'' || | |||
|- | |||
| E<sub>1</sub><nowiki>''</nowiki> || 2 || 2 cos(''θ'') | |||
| 2 cos(2''θ'') || 0 || −2 || −2 cos(''θ'') | |||
| −2 cos(2''θ'') || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub><nowiki>''</nowiki> || 2 || 2 cos(2''θ'') | |||
| 2 cos(''θ'') || 0 || −2 || −2 cos(2''θ'') | |||
| −2 cos(''θ'') || 0 || || | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>6''h''</sub> | |||
| Z<sub>2</sub>×D<sub>6</sub> || 24 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>6</sub><sup> </sup> || 2 ''C''<sub>3</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 3 ''C''<sub>2</sub>'<sup> </sup> | |||
| 3 ''C''<sub>2</sub><nowiki>''</nowiki><sup> </sup> || ''i'' | |||
| 2 ''S''<sub>3</sub><sup> </sup> || 2 ''S''<sub>6</sub><sup> </sup> | |||
| ''σ<sub>h</sub><sup> </sup>'' || 3 ''σ<sub>d</sub><sup> </sup>'' | |||
| 3 ''σ<sub>v</sub><sup> </sup>'' || colspan="2" | | |||
|- | |||
| A<sub>1g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2g</sub> || 1 || 1 || 1 || 1 || −1 || −1 | |||
| 1 || 1 || 1 || 1 || −1 || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1g</sub> || 1 || −1 || 1 || −1 || 1 || −1 | |||
| 1 || −1 || 1 || −1 || 1 || −1 | |||
| || | |||
|- | |||
| B<sub>2g</sub> || 1 || −1 || 1 || −1 || −1 || 1 | |||
| 1 || −1 || 1 || −1 || −1 || 1 | |||
| || | |||
|- | |||
| E<sub>1g</sub> || 2 || 1 || −1 || −2 || 0 || 0 | |||
| 2 || 1 || −1 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2g</sub> || 2 || −1 || −1 || 2 || 0 || 0 | |||
| 2 || −1 || −1 || 2 || 0 || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| A<sub>1u</sub> || 1 || 1 || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || −1 || −1 | |||
| || | |||
|- | |||
| A<sub>2u</sub> || 1 || 1 || 1 || 1 || −1 || −1 | |||
| −1 || −1 || −1 || −1 || 1 || 1 | |||
| ''z'' || | |||
|- | |||
| B<sub>1u</sub> || 1 || −1 || 1 || −1 || 1 || −1 | |||
| −1 || 1 || −1 || 1 || −1 || 1 | |||
| || | |||
|- | |||
| B<sub>2u</sub> || 1 || −1 || 1 || −1 || −1 || 1 | |||
| −1 || 1 || −1 || 1 || 1 || −1 | |||
| || | |||
|- | |||
| E<sub>1u</sub> || 2 || 1 || −1 || −2 || 0 || 0 | |||
| −2 || −1 || 1 || 2 || 0 || 0 | |||
| (''x'', ''y'') || | |||
|- | |||
| E<sub>2u</sub> || 2 || −1 || −1 || 2 || 0 || 0 | |||
| −2 || 1 || 1 || −2 || 0 || 0 | |||
| || | |||
|} | |||
|- | |||
| ''D''<sub>8''h''</sub> || Z<sub>2</sub>×D<sub>8</sub> || 32 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>8</sub><sup> </sup> || 2 ''C''<sub>8</sub><sup>3</sup> | |||
| 2 ''C''<sub>4</sub><sup> </sup> || ''C''<sub>2</sub><sup> </sup> | |||
| 4 ''C''<sub>2</sub>'<sup> </sup> | |||
| 4 ''C''<sub>2</sub><nowiki>''</nowiki><sup> </sup> || ''i'' | |||
| 2 ''S''<sub>8</sub><sup>3</sup> || 2 ''S''<sub>8</sub><sup> </sup> | |||
| 2 ''S''<sub>4</sub><sup> </sup> | |||
| ''σ<sub>h</sub><sup> </sup>'' | |||
| 4 ''σ<sub>d</sub><sup> </sup>'' | |||
| 4 ''σ<sub>v</sub><sup> </sup>'' | |||
| colspan="2" | ''θ''=2<sup>1/2</sup> | |||
|- | |||
| A<sub>1g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2g</sub> || 1 || 1 || 1 || 1 || 1 || −1 || −1 | |||
| 1 || 1 || 1 || 1 || 1 || −1 || −1 || ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1g</sub> || 1 || −1 || −1 || 1 || 1 || 1 || −1 | |||
| 1 || −1 || −1 || 1 || 1 || 1 || −1 || || | |||
|- | |||
| B<sub>2g</sub> || 1 || −1 || −1 || 1 || 1 || −1 || 1 | |||
| 1 || −1 || −1 || 1 || 1 || −1 || 1 || || | |||
|- | |||
| E<sub>1g</sub> || 2 || ''θ'' || −''θ'' || 0 || −2 || 0 || 0 | |||
| 2 || ''θ'' || −''θ'' || 0 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2g</sub> || 2 || 0 || 0 || −2 || 2 || 0 || 0 | |||
| 2 || 0 || 0 || −2 || 2 || 0 || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| E<sub>3g</sub> || 2 || −''θ'' || ''θ'' || 0 || −2 || 0 || 0 | |||
| 2 || −''θ'' || ''θ'' || 0 || −2 || 0 || 0 | |||
| || | |||
|- | |||
| A<sub>1u</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || −1 || −1 || −1 || || | |||
|- | |||
| A<sub>2u</sub> || 1 || 1 || 1 || 1 || 1 || −1 || −1 | |||
| −1 || −1 || −1 || −1 || −1 || 1 || 1 || ''z'' || | |||
|- | |||
| B<sub>1u</sub> || 1 || −1 || −1 || 1 || 1 || 1 || −1 | |||
| −1 || 1 || 1 || −1 || −1 || −1 || 1 || || | |||
|- | |||
| B<sub>2u</sub> || 1 || −1 || −1 || 1 || 1 || −1 || 1 | |||
| −1 || 1 || 1 || −1 || −1 || 1 || −1 | |||
| || | |||
|- | |||
| E<sub>1u</sub> || 2 || ''θ'' || −''θ'' || 0 || −2 || 0 || 0 | |||
| −2 || −''θ'' || ''θ'' || 0 || 2 || 0 || 0 | |||
| (''x'', ''y'') || | |||
|- | |||
| E<sub>2u</sub> || 2 || 0 || 0 || −2 || 2 || 0 || 0 | |||
| −2 || 0 || 0 || 2 || −2 || 0 || 0 || || | |||
|- | |||
| E<sub>3u</sub> || 2 || −''θ'' || ''θ'' || 0 || −2 || 0 || 0 | |||
| −2 || ''θ'' || −''θ'' || 0 || 2 || 0 || 0 | |||
| || | |||
|} | |||
|- | |||
|} | |||
==== Antiprismatic groups (''D''<sub>nd</sub>) ==== | |||
The antiprismatic groups are denoted by ''D''<sub>nd</sub>. These groups are characterized by i) an ''n''-fold proper rotation axis ''C''<sub>n</sub>; ii) ''n'' 2-fold proper rotation axes ''C''<sub>2</sub> normal to ''C''<sub>n</sub>; iii) ''n'' mirror planes ''σ<sub>d</sub>'' which contain ''C''<sub>n</sub>. The ''D''<sub>1''d''</sub> group is the same as the ''C''<sub>2''h''</sub> group in the [[#Reflection groups|reflection groups]] section. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !! Order !! Character Table | |||
|- | |||
| ''D''<sub>2''d''</sub> || D<sub>4</sub> || 8 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sup> </sup> || 2 ''S''<sub>4</sub><sup> </sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 2 ''C''<sub>2</sub>'<sup> </sup> | |||
| 2 ''σ<sub>d</sub><sup> </sup>'' || colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup>, ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || −1 || −1 || ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || 1 || −1 || | |||
| ''x''<sup>2</sup> − ''y''<sup>2</sup> | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || 1 || −1 || 1 || ''z'' || ''xy'' | |||
|- | |||
| E || 2 || 0 || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>''), (''x'', ''y'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>3''d''</sub> || D<sub>6</sub> || 12 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sup> </sup> || 2 ''C''<sub>3</sub><sup> </sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> || ''i''<sup> </sup> | |||
| 2 ''S''<sub>6</sub><sup> </sup> | |||
| 3 ''σ<sub>d</sub><sup> </sup>'' | |||
| colspan="2" | | |||
|- | |||
| A<sub>1g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2g</sub> || 1 || 1 || −1 || 1 || 1 || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| E<sub>g</sub> || 2 || −1 || 0 || 2 || −1 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy''), (''xz'', ''yz'') | |||
|- | |||
| A<sub>1u</sub> || 1 || 1 || 1 || −1 || −1 || −1 || || | |||
|- | |||
| A<sub>2u</sub> || 1 || 1 || −1 || −1 || −1 || 1 || ''z'' || | |||
|- | |||
| E<sub>u</sub> || 2 || −1 || 0 || −2 || 1 || 0 || (''x'', ''y'') || | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>4''d''</sub> || D<sub>8</sub> || 16 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sup> </sup> || 2 ''S''<sub>8</sub><sup> </sup> | |||
| 2 ''C''<sub>4</sub><sup> </sup> || 2 ''S''<sub>8</sub><sup>3</sup> | |||
| ''C''<sub>2</sub><sup> </sup> || 4 ''C''<sub>2</sub>'<sup> </sup> | |||
| 4 ''σ<sub>d</sub><sup> </sup>'' | |||
| colspan="2" | ''θ''=2<sup>1/2</sup> | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || 1 || 1 || −1 || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || −1 || 1 || 1 || −1 || || | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || 1 || −1 || 1 || −1 || 1 || ''z'' || | |||
|- | |||
| E<sub>1</sub> || 2 || ''θ'' || 0 || −''θ'' || −2 || 0 || 0 | |||
| (''x'', ''y'') || | |||
|- | |||
| E<sub>2</sub> || 2 || 0 || −2 || 0 || 2 || 0 || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| E<sub>3</sub> || 2 || −''θ'' || 0 || ''θ'' || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>5''d''</sub> || D<sub>10</sub> || 20 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''C''<sub>5</sub><sup> </sup> || 2 ''C''<sub>5</sub><sup>2</sup> | |||
| 5 ''C''<sub>2</sub><sup> </sup> || ''i''<sup> </sup> | |||
| 2 ''S''<sub>10</sub><sup> </sup> || 2 ''S''<sub>10</sub><sup>3</sup> | |||
| 5 ''σ<sub>d</sub><sup> </sup>'' | |||
| colspan="2" | ''θ''=2π/5 | |||
|- | |||
| A<sub>1g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2g</sub> || 1 || 1 || 1 || −1 || 1 || 1 || 1 || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| E<sub>1g</sub> || 2 || 2 cos(''θ'') || 2 cos(2''θ'') || 0 | |||
| 2 || 2 cos(2''θ'') || 2 cos(''θ'') || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2g</sub> || 2 || 2 cos(2''θ'') || 2 cos(''θ'') || 0 | |||
| 2 || 2 cos(''θ'') || 2 cos(2''θ'') || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| A<sub>1u</sub> || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || || | |||
|- | |||
| A<sub>2u</sub> || 1 || 1 || 1 || −1 | |||
| −1 || −1 || −1 || 1 || ''z'' || | |||
|- | |||
| E<sub>1u</sub> || 2 || 2 cos(''θ'') || 2 cos(2''θ'') || 0 | |||
| −2 || −2 cos(2''θ'') || −2 cos(''θ'') || 0 | |||
| (''x'', ''y'') || | |||
|- | |||
| E<sub>2u</sub> || 2 || 2 cos(2''θ'') || 2 cos(''θ'') || 0 | |||
| −2 || −2 cos(''θ'') || −2 cos(2''θ'') || 0 | |||
| || | |||
|- | |||
|} | |||
|- | |||
| ''D''<sub>6''d''</sub> || D<sub>12</sub> || 24 | |||
| align="left" | | |||
{| class="wikitable" style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 2 ''S''<sub>12</sub><sup> </sup> || 2 ''C''<sub>6</sub><sup> </sup> | |||
| 2 ''S''<sub>4</sub><sup> </sup> || 2 ''C''<sub>3</sub><sup> </sup> | |||
| 2 ''S''<sub>12</sub><sup>5</sup> || ''C''<sub>2</sub><sup> </sup> | |||
| 6 ''C''<sub>2</sub>'<sup> </sup> || 6 ''σ<sub>d</sub><sup> </sup>'' | |||
| colspan="2" | ''θ''=3<sup>1/2</sup> | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || −1 || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| B<sub>1</sub> || 1 || −1 || 1 || −1 || 1 || −1 || 1 || 1 || −1 | |||
| || | |||
|- | |||
| B<sub>2</sub> || 1 || −1 || 1 || −1 || 1 || −1 || 1 || −1 || 1 | |||
| ''z'' || | |||
|- | |||
| E<sub>1</sub> || 2 || ''θ'' || 1 || 0 || −1 | |||
| −''θ'' || −2 || 0 || 0 || (''x'', ''y'') || | |||
|- | |||
| E<sub>2</sub> || 2 || 1 || −1 || −2 || −1 || 1 || 2 || 0 || 0 || | |||
| (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| E<sub>3</sub> || 2 || 0 || −2 || 0 || 2 || 0 || −2 || 0 || 0 | |||
| || | |||
|- | |||
| E<sub>4</sub> || 2 || −1 || −1 || 2 || −1 || −1 || 2 || 0 || 0 | |||
| || | |||
|- | |||
| E<sub>5</sub> || 2 || −''θ'' || 1 || 0 || −1 | |||
| ''θ'' || −2 || 0 || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
|} | |||
=== [[Polyhedral group|Polyhedral]] symmetries === | |||
These symmetries are characterized by having more than one proper rotation axis of order greater than 2. | |||
==== Cubic groups ==== | |||
These polyhedral groups are characterized by not having a ''C''<sub>5</sub> proper rotation axis. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !! Order !! Character Table | |||
|- | |||
| ''[[Tetrahedral group#Chiral tetrahedral symmetry|T]]'' || A<sub>4</sub> || 12 | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E || 4 ''C''<sub>3</sub><sup> </sup> | |||
| 4 ''C''<sub>3</sub><sup>2</sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> | |||
| colspan="2" | ''θ''=e<sup>2π ''i''/3</sup> | |||
|- | |||
| A || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup> + ''z''<sup>2</sup> | |||
|- | |||
| E || 1 <br> 1 || ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 || | |||
| (2 ''z''<sup>2</sup> − ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br> ''x''<sup>2</sup> − ''y''<sup>2</sup>) | |||
|- | |||
| T || 3 || 0 || 0 || −1 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'', ''R<sub>z</sub>''),<br>(''x'', ''y'', ''z'') | |||
| (''xy'', ''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''[[Tetrahedral group#Achiral tetrahedral symmetry|T<sub>d</sub>]]'' || S<sub>4</sub> || 24 | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E || 8 ''C''<sub>3</sub><sup> </sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> || 6 ''S''<sub>4</sub><sup> </sup> | |||
| 6 ''σ<sub>d</sub><sup> </sup>'' | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup> + ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || 1 || 1 || −1 || −1 || || | |||
|- | |||
| E || 2 || −1 || 2 || 0 || 0 || | |||
| (2 ''z''<sup>2</sup> − ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br> ''x''<sup>2</sup> − ''y''<sup>2</sup>) | |||
|- | |||
| T<sub>1</sub> || 3 || 0 || −1 || 1 || −1 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'', ''R<sub>z</sub>'') || | |||
|- | |||
| T<sub>2</sub> || 3 || 0 || −1 || −1 || 1 | |||
| (''x'', ''y'', ''z'') || (''xy'', ''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''[[Tetrahedral group#Pyritohedral symmetry|T<sub>h</sub>]]'' || Z<sub>2</sub>×A<sub>4</sub> || 24 | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E || 4 ''C''<sub>3</sub><sup> </sup> | |||
| 4 ''C''<sub>3</sub><sup>2</sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> || ''i'' | |||
| 4 ''S''<sub>6</sub><sup> </sup> || 4 ''S''<sub>6</sub><sup>5</sup> | |||
| 3 ''σ<sub>h</sub><sup> </sup>'' | |||
| colspan="2" | ''θ''=e<sup>2π ''i''/3</sup> | |||
|- | |||
| A<sub>g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup> + ''z''<sup>2</sup> | |||
|- | |||
| A<sub>u</sub> || 1 || 1 || 1 || 1 || −1 || −1 || −1 || −1 | |||
| || | |||
|- | |||
| E<sub>g</sub> || 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 || 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 | |||
| | |||
| (2 ''z''<sup>2</sup> − ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br> ''x''<sup>2</sup> − ''y''<sup>2</sup>) | |||
|- | |||
| E<sub>u</sub> || 1 <br> 1 | |||
| ''θ''<sup> </sup> <br> ''θ''<sup>C</sup> | |||
| ''θ''<sup>C</sup> <br> ''θ''<sup> </sup> | |||
| 1 <br> 1 || −1 <br> −1 | |||
| −''θ''<sup> </sup> <br> −''θ''<sup>C</sup> | |||
| −''θ''<sup>C</sup> <br> −''θ''<sup> </sup> | |||
| −1 <br> −1 | |||
| || | |||
|- | |||
| T<sub>g</sub> || 3 || 0 || 0 || −1 || 3 || 0 || 0 || −1 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'', ''R<sub>z</sub>'') | |||
| (''xy'', ''xz'', ''yz'') | |||
|- | |||
| T<sub>u</sub> || 3 || 0 || 0 || −1 || −3 || 0 || 0 || 1 | |||
| (''x'', ''y'', ''z'') || | |||
|- | |||
|} | |||
|- | |||
| ''[[Octahedral symmetry#Chiral octahedral symmetry|O]]'' || S<sub>4</sub> || 24 | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 6 ''C''<sub>4</sub><sup> </sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> (''C''<sub>4</sub><sup>2</sup>) | |||
| 8 ''C''<sub>3</sub><sup> </sup> || 6 ''C''<sub>2</sub><sup> </sup> | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub> || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup> + ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub> || 1 || −1 || 1 || 1 || −1 || || | |||
|- | |||
| E || 2 || 0 || 2 || −1 || 0 || | |||
| (2 ''z''<sup>2</sup> − ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br> ''x''<sup>2</sup> − ''y''<sup>2</sup>) | |||
|- | |||
| T<sub>1</sub> || 3 || 1 || −1 || 0 || −1 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'', ''R<sub>z</sub>''), <br> (''x'', ''y'', ''z'') | |||
| | |||
|- | |||
| T<sub>2</sub> || 3 || −1 || −1 || 0 || 1 | |||
| || (''xy'', ''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''[[Octahedral symmetry#Achiral octahedral symmetry|O<sub>h</sub>]]'' | |||
| Z<sub>2</sub>×S<sub>4</sub> || 48 | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E<sub> </sub><sup> </sup> | |||
| 8 ''C''<sub>3</sub><sup> </sup> || 6 ''C''<sub>2</sub><sup> </sup> | |||
| 6 ''C''<sub>4</sub><sup> </sup> | |||
| 3 ''C''<sub>2</sub><sup> </sup> (''C''<sub>4</sub><sup>2</sup>) | |||
| ''i'' || 6 ''S''<sub>4</sub><sup> </sup> | |||
| 8 ''S''<sub>6</sub><sup> </sup> || 3 ''σ<sub>h</sub><sup> </sup>'' | |||
| 6 ''σ<sub>d</sub><sup> </sup>'' | |||
| colspan="2" | | |||
|- | |||
| A<sub>1g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup> + ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2g</sub> || 1 || 1 || −1 || −1 || 1 || 1 || −1 || 1 || 1 || −1 | |||
| || | |||
|- | |||
| E<sub>g</sub> || 2 || −1 || 0 || 0 || 2 || 2 || 0 || −1 || 2 || 0 | |||
| | |||
| (2 ''z''<sup>2</sup> − ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br> ''x''<sup>2</sup> − ''y''<sup>2</sup>) | |||
|- | |||
| T<sub>1g</sub> || 3 || 0 || −1 || 1 || −1 || 3 || 1 || 0 || −1 || −1 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'', ''R<sub>z</sub>'') | |||
| | |||
|- | |||
| T<sub>2g</sub> || 3 || 0 || 1 || −1 || −1 || 3 || −1 || 0 || −1 || 1 | |||
| || (''xy'', ''xz'', ''yz'') | |||
|- | |||
| A<sub>1u</sub> || 1 || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || −1 | |||
| || | |||
|- | |||
| A<sub>2u</sub> || 1 || 1 || −1 || −1 || 1 | |||
| −1 || 1 || −1 || −1 || 1 | |||
| || | |||
|- | |||
| E<sub>u</sub> || 2 || −1 || 0 || 0 || 2 || −2 || 0 || 1 || −2 || 0 | |||
| || | |||
|- | |||
| T<sub>1u</sub> || 3 || 0 || −1 || 1 || −1 | |||
| −3 || −1 || 0 || 1 || 1 | |||
| (''x'', ''y'', ''z'') || | |||
|- | |||
| T<sub>2u</sub> || 3 || 0 || 1 || −1 || −1 | |||
| −3 || 1 || 0 || 1 || −1 | |||
| || | |||
|} | |||
|- | |||
|} | |||
==== Icosahedral groups ==== | |||
{{see also|Icosahedral symmetry}} | |||
These polyhedral groups are characterized by having a ''C''<sub>5</sub> proper rotation axis. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Canonical<br>group !!Order !! Character Table | |||
|- | |||
| ''I'' || A<sub>5</sub> || 60 | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E || 12 ''C''<sub>5</sub><sup> </sup> | |||
| 12 ''C''<sub>5</sub><sup>2</sup> | |||
| 20 ''C''<sub>3</sub><sup> </sup> | |||
| 15 ''C''<sub>2</sub><sup> </sup> | |||
| colspan="2" | ''θ''=π/5</sup> | |||
|- | |||
| A || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup> + ''z''<sup>2</sup> | |||
|- | |||
| T<sub>1</sub> || 3 || 2 cos(''θ'') || 2 cos(3''θ'') || 0 || −1 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'', ''R<sub>z</sub>''),<br>(''x'', ''y'', ''z'') || | |||
|- | |||
| T<sub>2</sub> || 3 || 2 cos(3''θ'') || 2 cos(''θ'') || 0 || −1 | |||
| || | |||
|- | |||
| G || 4 || −1 || −1 || 1 || 0 || || | |||
|- | |||
| H || 5 || 0 || 0 || −1 || 1 || | |||
| (2 ''z''<sup>2</sup> − ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br> ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br>''xy'', ''xz'', ''yz'') | |||
|- | |||
|} | |||
|- | |||
| ''I<sub>h</sub>'' || Z<sub>2</sub>×A<sub>5</sub> || 120 | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E || 12 ''C''<sub>5</sub><sup> </sup> | |||
| 12 ''C''<sub>5</sub><sup>2</sup> | |||
| 20 ''C''<sub>3</sub><sup> </sup> | |||
| 15 ''C''<sub>2</sub><sup> </sup> || ''i'' | |||
| 12 ''S''<sub>10</sub><sup> </sup> | |||
| 12 ''S''<sub>10</sub><sup>3</sup> | |||
| 20 ''S''<sub>6</sub><sup> </sup> | |||
| 15 ''σ'' | |||
| colspan="2" | ''θ''=π/5</sup> | |||
|- | |||
| A<sub>g</sub> || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || 1 || | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup> + ''z''<sup>2</sup> | |||
|- | |||
| T<sub>1g</sub> || 3 || 2 cos(''θ'') || 2 cos(3''θ'') || 0 || −1 | |||
| 3 || 2 cos(3''θ'') || 2 cos(''θ'') || 0 || −1 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'', ''R<sub>z</sub>'') || | |||
|- | |||
| T<sub>2g</sub> || 3 || 2 cos(3''θ'') || 2 cos(''θ'') || 0 || −1 | |||
| 3 || 2 cos(''θ'') || 2 cos(3''θ'') || 0 || −1 || || | |||
|- | |||
| G<sub>g</sub> || 4 || −1 || −1 || 1 || 0 || 4 || −1 || −1 || 1 || 0 | |||
| || | |||
|- | |||
| H<sub>g</sub> || 5 || 0 || 0 || −1 || 1 || 5 || 0 || 0 || −1 || 1 || | |||
| (2 ''z''<sup>2</sup> − ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br> ''x''<sup>2</sup> − ''y''<sup>2</sup>, <br>''xy'', ''xz'', ''yz'') | |||
|- | |||
| A<sub>u</sub> || 1 || 1 || 1 || 1 || 1 | |||
| −1 || −1 || −1 || −1 || −1 | |||
| || | |||
|- | |||
| T<sub>1u</sub> || 3 || 2 cos(''θ'') || 2 cos(3''θ'') || 0 || −1 | |||
| −3 || −2 cos(3''θ'') || −2 cos(''θ'') || 0 || 1 | |||
| (''x'', ''y'', ''z'') || | |||
|- | |||
| T<sub>2u</sub> || 3 || 2 cos(3''θ'') || 2 cos(''θ'') || 0 || −1 | |||
| −3 || −2 cos(''θ'') || −2 cos(3''θ'') || 0 || 1 | |||
| || | |||
|- | |||
| G<sub>u</sub> || 4 || −1 || −1 || 1 || 0 | |||
| −4 || 1 || 1 || −1 || 0 | |||
| || | |||
|- | |||
| H<sub>u</sub> || 5 || 0 || 0 || −1 || 1 || −5 || 0 || 0 || 1 || −1 | |||
| || | |||
|- | |||
|} | |||
|- | |||
|} | |||
=== Linear (cylindrical) groups === | |||
These groups are characterized by having a proper rotation axis ''C''<sub>∞</sub> around which the symmetry is invariant to ''any'' rotation. | |||
{| class="wikitable" style="text-align:center" | |||
! Point<br>Group !! Character Table | |||
|- | |||
| ''C<sub>∞v</sub>'' | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E || 2 ''C''<sub>∞</sub><sup>Φ</sup> | |||
| ... | |||
| ∞ σ<sub>v</sub><sup> </sup> | |||
| colspan="2" | | |||
|- | |||
| A<sub>1</sub>=Σ<sup>+</sup> || 1 || 1 || ... || 1 || ''z'' | |||
| ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| A<sub>2</sub>=Σ<sup>−</sup> || 1 || 1 || ... || −1 || ''R<sub>z</sub>'' | |||
| | |||
|- | |||
| E<sub>1</sub>=Π || 2 || 2 cos(Φ) || ... || 0 | |||
| (''x'', ''y''), (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| E<sub>2</sub>=Δ || 2 || 2 cos(2Φ) || ... || 0 | |||
| || (''x''<sup>2</sup> - ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| E<sub>3</sub>=Φ || 2 || 2 cos(3Φ) || ... || 0 | |||
| || | |||
|- | |||
| ... || ... || ... || ... || ... || || | |||
|- | |||
|} | |||
|- | |||
| ''D<sub>∞h</sub>'' | |||
| align="left" | | |||
{| style="text-align:center" | |||
| || E || 2 ''C''<sub>∞</sub><sup>Φ</sup> || ... | |||
| ∞ σ<sub>v</sub><sup> </sup> || ''i'' | |||
| 2 ''S''<sub>∞</sub><sup>Φ</sup> || ... || ∞ ''C''<sub>2</sub><sup> </sup> | |||
| colspan="2" | | |||
|- | |||
| Σ<sub>g</sub><sup>+</sup> || 1 || 1 || ... || 1 || 1 || 1 || ... || 1 | |||
| || ''x''<sup>2</sup> + ''y''<sup>2</sup>, ''z''<sup>2</sup> | |||
|- | |||
| Σ<sub>g</sub><sup>−</sup> || 1 || 1 || ... | |||
| −1 || 1 || 1 || ... || −1 | |||
| ''R<sub>z</sub>'' || | |||
|- | |||
| Π<sub>g</sub> || 2 || 2 cos(Φ) || ... || 0 ||2 || −2 cos(Φ) || .. || 0 | |||
| (''R<sub>x</sub>'', ''R<sub>y</sub>'') || (''xz'', ''yz'') | |||
|- | |||
| Δ<sub>g</sub> || 2 || 2 cos(2Φ) || ... || 0 || 2 || 2 cos(2Φ) || .. || 0 | |||
| || (''x''<sup>2</sup> − ''y''<sup>2</sup>, ''xy'') | |||
|- | |||
| ... || ... || ... || ... || ... || ... || ... || ... || ... || || | |||
|- | |||
| Σ<sub>u</sub><sup>+</sup> || 1 || 1 || ... | |||
| 1 || −1 || −1 || ... || −1 | |||
| ''z'' || | |||
|- | |||
| Σ<sub>u</sub><sup>−</sup> || 1 || 1 || ... | |||
| −1 || −1 || −1 || ... || 1 | |||
| || | |||
|- | |||
| Π<sub>u</sub> || 2 || 2 cos(Φ) || ... | |||
| 0 || −2 || 2 cos(Φ) || .. || 0 | |||
| (''x'', ''y'') || | |||
|- | |||
| Δ<sub>u</sub> || 2 || 2 cos(2Φ) || ... | |||
| 0 || −2 || −2 cos(2Φ) || .. || 0 | |||
| || | |||
|- | |||
| ... || ... || ... || ... || ... || ... || ... || ... || ... || || | |||
|} | |||
|- | |||
|} | |||
== See also == | |||
*[[Linear combination of atomic orbitals|Linear combination of atomic orbitals molecular orbital method]] | |||
*[[Raman spectroscopy]] | |||
*[[Molecular vibration|Vibrational spectroscopy (molecular vibration)]] | |||
*[[List of small groups]] | |||
*[[Cubic harmonic]]s | |||
== Notes == | |||
{{Reflist}} | |||
==External links== | |||
*[http://gernot-katzers-spice-pages.com/character_tables/ Character tables for many more point groups] (includes symmetry transformations of Cartesian products up to sixth order) | |||
== Further reading == | |||
* {{cite book | last = Bunker | first = Philip | coauthors = Jensen, Per | title = Molecular Symmetry and Spectroscopy, Second edition | publisher = NRC Research Press | year = 2006 | location = [[Ottawa]] | isbn = 0-660-19628-X}} | |||
[[Category:Theoretical chemistry]] | |||
[[Category:Physical chemistry]] | |||
[[Category:Group theory]] | |||
[[Category:Finite groups]] |
Revision as of 12:11, 10 December 2012
This lists the character tables for the more common molecular point groups used in the study of molecular symmetry. These tables are based on the group-theoretical treatment of the symmetry operations present in common molecules, and are useful in molecular spectroscopy and quantum chemistry. Information regarding the use of the tables, as well as more extensive lists of them, can be found in the references.[1][2][3][4][5]
Notation
For each non-linear group, the tables give the most standard notation of the finite group isomorphic to the point group, followed by the order of the group (number of invariant symmetry operations). The finite group notation used is: Zn: cyclic group of order n, Dn: dihedral group isomorphic to the symmetry group of an n–sided regular polygon, Sn: symmetric group on n letters, and An: alternating group on n letters.
The character tables then follow for all groups. The rows of the character tables correspond to the irreducible representations of the group, with their conventional names in the left margin. The naming conventions are as follows:
- A and B are singly degenerate representations, with the former transforming symmetrically around the principal axis of the group, and the latter asymmetrically. E, T, G, H, ... are doubly, triply, quadruply, quintuply, ... degenerate representations.
- g and u subscripts denote symmetry and antisymmetry, respectively, with respect to a center of inversion. Subscripts "1" and "2" denote symmetry and antisymmetry, respectively, with respect to a nonprincipal rotation axis. Higher numbers denote additional representations with such asymmetry.
- Single prime ( ' ) and double prime ( '' ) superscripts denote symmetry and antisymmetry, respectively, with respect to a horizontal mirror plane σh, one perpendicular to the principal rotation axis.
All but the two rightmost columns correspond to the symmetry operations which are invariant in the group. In the case of sets of similar operations with the same characters for all representations, they are presented as one column, with the number of such similar operations noted in the heading.
The body of the tables contain the characters in the respective irreducible representations for each respective symmetry operation, or set of symmetry operations.
The two rightmost columns indicate which irreducible representations describe the symmetry transformations of the three Cartesian coordinates (x, y and z), rotations about those three coordinates (Rx, Ry and Rz), and functions of the quadratic terms of the coordinates(x2, y2, z2, xy, xz, and yz).
The symbol i used in the body of the table denotes the imaginary unit: i 2 = −1. Used in a column heading, it denotes the operation of inversion. A superscripted uppercase "C" denotes complex conjugation.
Character tables
Nonaxial symmetries
These groups are characterized by a lack of a proper rotation axis, noting that a rotation is considered the identity operation. These groups have involutional symmetry: the only nonidentity operation, if any, is its own inverse.
In the group , all functions of the Cartesian coordinates and rotations about them transform as the irreducible representation.
Point Group | Canonical Group | Order | Character Table | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ||||||||||||||||||
2 |
| |||||||||||||||||
|
Cyclic symmetries
The families of groups with these symmetries have only one rotation axis.
Cyclic groups (Cn)
The cyclic groups are denoted by Cn. These groups are characterized by an n-fold proper rotation axis Cn. The C1 group is covered in the nonaxial groups section.
Point Group |
Canonical Group |
Order | Character Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C2 | Z2 | 2 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C3 | Z3 | 3 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C4 | Z4 | 4 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C5 | Z5 | 5 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C6 | Z6 | 6 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C8 | Z8 | 8 |
|
Reflection groups (Cnh)
The reflection groups are denoted by Cnh. These groups are characterized by i) an n-fold proper rotation axis Cn; ii) a mirror plane σh normal to Cn. The C1h group is the same as the Cs group in the nonaxial groups section.
Point Group |
Canonical group |
Order | Character Table | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C2h | Z2 × Z2 | 4 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C3h | Z6 | 6 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C4h | Z2 × Z4 | 8 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C5h | Z10 | 10 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C6h | Z2 × Z6 | 12 |
|
Pyramidal groups (Cnv)
The pyramidal groups are denoted by Cnv. These groups are characterized by i) an n-fold proper rotation axis Cn; ii) n mirror planes σv which contain Cn. The C1v group is the same as the Cs group in the nonaxial groups section.
Point Group |
Canonical group |
Order | Character Table | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C2v | Z2 × Z2 (=D2) |
4 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C3v | D3 | 6 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C4v | D4 | 8 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C5v | D5 | 10 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C6v | D6 | 12 |
|
Improper rotation groups (Sn)
The improper rotation groups are denoted by Sn. These groups are characterized by an n-fold improper rotation axis Sn, where n is necessarily even. The S2 group is the same as the Cs group in the nonaxial groups section.
The S8 table reflects the 2007 discovery of errors in older references.[4] Specifically, (Rx, Ry) transform not as E1 but rather as E3.
Point Group |
Canonical group |
Order | Character Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
S4 | Z4 | 4 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
S6 | Z6 | 6 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
S8 | Z8 | 8 |
|
Dihedral symmetries
The families of groups with these symmetries are characterized by 2-fold proper rotation axes normal to a principal rotation axis.
Dihedral groups (Dn)
The dihedral groups are denoted by Dn. These groups are characterized by i) an n-fold proper rotation axis Cn; ii) n 2-fold proper rotation axes C2 normal to Cn. The D1 group is the same as the C2 group in the cyclic groups section.
Point Group |
Canonical group |
Order | Character Table | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
D2 | Z2 × Z2 (=D2) |
4 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D3 | D3 | 6 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D4 | D4 | 8 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D5 | D5 | 10 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D6 | D6 | 12 |
|
Prismatic groups (Dnh)
The prismatic groups are denoted by Dnh. These groups are characterized by i) an n-fold proper rotation axis Cn; ii) n 2-fold proper rotation axes C2 normal to Cn; iii) a mirror plane σh normal to Cn and containing the C2s. The D1h group is the same as the C2v group in the pyramidal groups section.
The D8h table reflects the 2007 discovery of errors in older references.[4] Specifically, symmetry operation column headers 2S8 and 2S83 were reversed in the older references.
Point Group |
Canonical group |
Order | Character Table | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
D2h | Z2×Z2×Z2 (=Z2×D2) |
8 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D3h | D6 | 12 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D4h | Z2×D4 | 16 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D5h | D10 | 20 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D6h | Z2×D6 | 24 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D8h | Z2×D8 | 32 |
|
Antiprismatic groups (Dnd)
The antiprismatic groups are denoted by Dnd. These groups are characterized by i) an n-fold proper rotation axis Cn; ii) n 2-fold proper rotation axes C2 normal to Cn; iii) n mirror planes σd which contain Cn. The D1d group is the same as the C2h group in the reflection groups section.
Point Group |
Canonical group |
Order | Character Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
D2d | D4 | 8 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D3d | D6 | 12 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D4d | D8 | 16 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D5d | D10 | 20 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D6d | D12 | 24 |
|
Polyhedral symmetries
These symmetries are characterized by having more than one proper rotation axis of order greater than 2.
Cubic groups
These polyhedral groups are characterized by not having a C5 proper rotation axis.
Point Group |
Canonical group |
Order | Character Table | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
T | A4 | 12 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Td | S4 | 24 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Th | Z2×A4 | 24 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
O | S4 | 24 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Oh | Z2×S4 | 48 |
|
Icosahedral groups
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In 12 months 2013, c ommercial retails, shoebox residences and mass market properties continued to be the celebrities of the property market. Models are snapped up in report time and at document breaking prices. Builders are having fun with overwhelming demand and patrons need more. We feel that these segments of the property market are booming is a repercussion of the property cooling measures no.6 and no. 7. With additional buyer's stamp responsibility imposed on residential properties, buyers change their focus to commercial and industrial properties. I imagine every property purchasers need their property funding to understand in value.
These polyhedral groups are characterized by having a C5 proper rotation axis.
Point Group |
Canonical group |
Order | Character Table | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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I | A5 | 60 |
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Ih | Z2×A5 | 120 |
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Linear (cylindrical) groups
These groups are characterized by having a proper rotation axis C∞ around which the symmetry is invariant to any rotation.
Point Group |
Character Table | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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C∞v |
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D∞h |
|
See also
- Linear combination of atomic orbitals molecular orbital method
- Raman spectroscopy
- Vibrational spectroscopy (molecular vibration)
- List of small groups
- Cubic harmonics
Notes
43 year old Petroleum Engineer Harry from Deep River, usually spends time with hobbies and interests like renting movies, property developers in singapore new condominium and vehicle racing. Constantly enjoys going to destinations like Camino Real de Tierra Adentro.
External links
- Character tables for many more point groups (includes symmetry transformations of Cartesian products up to sixth order)
Further reading
- 20 year-old Real Estate Agent Rusty from Saint-Paul, has hobbies and interests which includes monopoly, property developers in singapore and poker. Will soon undertake a contiki trip that may include going to the Lower Valley of the Omo.
My blog: http://www.primaboinca.com/view_profile.php?userid=5889534
- ↑ 20 year-old Real Estate Agent Rusty from Saint-Paul, has hobbies and interests which includes monopoly, property developers in singapore and poker. Will soon undertake a contiki trip that may include going to the Lower Valley of the Omo.
My blog: http://www.primaboinca.com/view_profile.php?userid=5889534 - ↑ 20 year-old Real Estate Agent Rusty from Saint-Paul, has hobbies and interests which includes monopoly, property developers in singapore and poker. Will soon undertake a contiki trip that may include going to the Lower Valley of the Omo.
My blog: http://www.primaboinca.com/view_profile.php?userid=5889534 - ↑ Template:Cite web
- ↑ 4.0 4.1 4.2 One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting
In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang
Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang - ↑ Template:Cite web