Reduction formula for point group C2h

Your representation

E C2 (z) i h
36 0 0 4

can be reduced to

Ag Bg Au Bu
10 8 8 10

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
9 6 7 8



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 30 30 9
quadratic 900 465 130
cubic 27000 4960 1266
quartic 810000 40920 10362
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 9 6 7 8
quadratic 130 110 111 114
cubic 1266 1214 1230 1250
quartic 10362 10158 10174 10226

Number of independant internal coordinates 9

Literature




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