Reduction formula for point group C2h

Your representation

E C2 (z) i h
180 0 0 4

can be reduced to

Ag Bg Au Bu
46 44 44 46

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
45 42 43 44



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 174 174 45
quadratic 30276 15225 3874
cubic 5268024 893200 223434
quartic 916636176 39524100 9884118
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 45 42 43 44
quadratic 3874 3782 3783 3786
cubic 223434 223166 223254 223346
quartic 9884118 9879846 9879934 9880202

Number of independant internal coordinates 45

Literature




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