Reduction formula for point group Ci

Your representation

E i
180 0

can be reduced to

Ag Au
90 90

Substraction of translational and rotational contributions results in

Ag Au
87 87



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 174 174 87
quadratic 30276 15225 7656
cubic 5268024 893200 446600
quartic 916636176 39524100 19763964
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 87 87
quadratic 7656 7569
cubic 446600 446600
quartic 19763964 19760136

Number of independant internal coordinates 87

Literature




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