Reduction formula for point group C2h

Your representation

E C2 (z) i h
24 -2 0 6

can be reduced to

Ag Bg Au Bu
7 5 4 8

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
6 3 3 6



Force field analysis

Infrared and Raman activities (harmonic approximation)
Method Ag Bg Au Bu
Infrared - - + +
Raman + + - -

Number of force field parameters
Force field No. 1 No. 2 No. 3
linear 18 18 6
quadratic 324 171 54
cubic 5832 1140 308
quartic 104976 5985 1587
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 Ag Bg Au Bu
linear 6 3 3 6
quadratic 54 36 36 45
cubic 308 262 262 308
quartic 1587 1428 1428 1542

Number of independant internal coordinates 6

Literature




Character tables for chemically important point groups Character table for point group C2h Jacobs University Bremen