Reduction formula for point group C2

Your representation

E C2
51 -1

can be reduced to

A B
25 26

Substraction of translational and rotational contributions results in

A B
23 22



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 45 45 23
quadratic 2025 1035 529
cubic 91125 16215 8119
quartic 4100625 194580 97428
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 23 22
quadratic 529 506
cubic 8119 8096
quartic 97428 97152

Number of independant internal coordinates 23

Literature




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