Reduction formula for point group C2h

Your representation

E C2 (z) i h
36 -4 0 0

can be reduced to

Ag Bg Au Bu
8 10 8 10

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
7 8 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 7
quadratic 900 465 128
cubic 27000 4960 1232
quartic 810000 40920 10328
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 7 8 7 8
quadratic 128 112 113 112
cubic 1232 1248 1232 1248
quartic 10328 10192 10208 10192

Number of independant internal coordinates 7

Literature




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