Reduction formula for point group C2

Your representation

E C2
66 -2

can be reduced to

A B
32 34

Substraction of translational and rotational contributions results in

A B
30 30



Force field analysis

Infrared and Raman activities (harmonic approximation)
Method A B
Infrared + +
Raman + +

Number of force field parameters
Force field No. 1 No. 2 No. 3
linear 60 60 30
quadratic 3600 1830 930
cubic 216000 37820 18910
quartic 12960000 595665 298065
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 A B
linear 30 30
quadratic 930 900
cubic 18910 18910
quartic 298065 297600

Number of independant internal coordinates 30

Literature




Character tables for chemically important point groups Character table for point group C2 Jacobs University Bremen