Reduction formula for point group C2

Your representation

E C2
54 -2

can be reduced to

A B
26 28

Substraction of translational and rotational contributions results in

A B
24 24



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 48 48 24
quadratic 2304 1176 600
cubic 110592 19600 9800
quartic 5308416 249900 125100
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 24 24
quadratic 600 576
cubic 9800 9800
quartic 125100 124800

Number of independant internal coordinates 24

Literature




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