Reduction formula for point group D5d
Your representation
E |
2C5 |
2(C5)2 |
5C'2 |
i |
2(S10)3 |
2S10 |
5d |
72 |
6.4721 |
-2.4721 |
0 |
0 |
-0.0000 |
0.0000 |
8 |
can be reduced to
A1g |
A2g |
E1g |
E2g |
A1u |
A2u |
E1u |
E2u |
6 |
2 |
8 |
6 |
2 |
6 |
8 |
6 |
Substraction of translational and rotational contributions results in
A1g |
A2g |
E1g |
E2g |
A1u |
A2u |
E1u |
E2u |
6 |
1 |
7 |
6 |
2 |
5 |
7 |
6 |
Force field analysis
Infrared and Raman activities (harmonic approximation)
Method |
A1g |
A2g |
E1g |
E2g |
A1u |
A2u |
E1u |
E2u |
Infrared |
- |
- |
- |
- |
- |
+ |
+ |
- |
Raman |
+ |
- |
+ |
+ |
- |
- |
- |
- |
No. 1 : Total number of force constants .
No. 2 : Total number of force constants k.
No. 3 : Total number of nonvanishing force constants k.
Symmetry properties of force field parameters
Force field |
A1g |
A2g |
E1g |
E2g |
A1u |
A2u |
E1u |
E2u |
linear |
6 |
1 |
7 |
6 |
2 |
5 |
7 |
6 |
quadratic |
138 |
88 |
224 |
224 |
102 |
117 |
218 |
217 |
cubic |
2611 |
2401 |
5012 |
5011 |
2435 |
2577 |
5012 |
5011 |
quartic |
43863 |
42644 |
86506 |
86506 |
42902 |
43492 |
86394 |
86394 |
Number of independant internal coordinates |
6 |
Literature
- J.K.G. Watson, J. Mol. Spec. 41 229 (1972)
The Numbers of Structural Parameters and Potential Constants of Molecules
Last update November, 13th 2023 by A. Gelessus, Impressum, Datenschutzerklärung/DataPrivacyStatement