Reduction formula for point group C2h

Your representation

E C2 (z) i h
36 0 0 12

can be reduced to

Ag Bg Au Bu
12 6 6 12

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
11 4 5 10



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 11
quadratic 900 465 146
cubic 27000 4960 1366
quartic 810000 40920 10826
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 11 4 5 10
quadratic 146 94 95 130
cubic 1366 1114 1130 1350
quartic 10826 9694 9710 10690

Number of independant internal coordinates 11

Literature




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