Reduction formula for point group Ci

Your representation

E i
252 0

can be reduced to

Ag Au
126 126

Substraction of translational and rotational contributions results in

Ag Au
123 123



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 246 246 123
quadratic 60516 30381 15252
cubic 14886936 2511496 1255748
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 Ag Au
linear 123 123
quadratic 15252 15129
cubic 1255748 1255748
quartic XXX*XXX*
*Not calculated for systems with more than 75 atoms

Number of independant internal coordinates 123

Literature




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