Reduction formula for point group Ci

Your representation

E i
120 0

can be reduced to

Ag Au
60 60

Substraction of translational and rotational contributions results in

Ag Au
57 57



Force field analysis

Infrared and Raman activities (harmonic approximation)
Method Ag Au
Infrared - +
Raman + -

Number of force field parameters
Force field No. 1 No. 2 No. 3
linear 114 114 57
quadratic 12996 6555 3306
cubic 1481544 253460 126730
quartic 168896016 7413705 3707679
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 Ag Au
linear 57 57
quadratic 3306 3249
cubic 126730 126730
quartic 3707679 3706026

Number of independant internal coordinates 57

Literature




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