Reduction formula for point group C2h

Your representation

E C2 (z) i h
120 0 0 8

can be reduced to

Ag Bg Au Bu
32 28 28 32

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
31 26 27 30



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 114 114 31
quadratic 12996 6555 1690
cubic 1481544 253460 63530
quartic 168896016 7413705 1855199
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 31 26 27 30
quadratic 1690 1616 1617 1632
cubic 63530 63200 63258 63472
quartic 1855199 1852480 1852538 1853488

Number of independant internal coordinates 31

Literature




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