Reduction formula for point group C2h

Your representation

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

can be reduced to

Ag Bg Au Bu
6 6 5 7

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
5 4 4 5



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 5
quadratic 324 171 50
cubic 5832 1140 290
quartic 104976 5985 1535
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 5 4 4 5
quadratic 50 40 40 41
cubic 290 280 280 290
quartic 1535 1480 1480 1490

Number of independant internal coordinates 5

Literature




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