Reduction formula for point group Cs

Your representation

E h
30 10

can be reduced to

A' A''
20 10

Substraction of translational and rotational contributions results in

A' A''
17 7



Force field analysis

Infrared and Raman activities (harmonic approximation)
Method A' A''
Infrared + +
Raman + +

Number of force field parameters
Force field No. 1 No. 2 No. 3
linear 24 24 17
quadratic 576 300 181
cubic 13824 2600 1445
quartic 331776 17550 9339
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 A' A''
linear 17 7
quadratic 181 119
cubic 1445 1155
quartic 9339 8211

Number of independant internal coordinates 17

Literature




Character tables for chemically important point groups Character table for point group Cs Jacobs University Bremen