Reduction formula for point group C2

Your representation

E C2
252 0

can be reduced to

A B
126 126

Substraction of translational and rotational contributions results in

A B
124 122



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 246 246 124
quadratic 60516 30381 15253
cubic 14886936 2511496 1255872
quartic XXX*XXX*XXX*
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 124 122
quadratic 15253 15128
cubic 1255872 1255624
quartic XXX*XXX*
*Not calculated for systems with more than 75 atoms

Number of independant internal coordinates 124

Literature




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