Reduction formula for point group C2

Your representation

E C2
78 -2

can be reduced to

A B
38 40

Substraction of translational and rotational contributions results in

A B
36 36



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 72 72 36
quadratic 5184 2628 1332
cubic 373248 64824 32412
quartic 26873856 1215450 608058
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 36 36
quadratic 1332 1296
cubic 32412 32412
quartic 608058 607392

Number of independant internal coordinates 36

Literature




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