Reduction formula for point group Ci

Your representation

E i
36 0

can be reduced to

Ag Au
18 18

Substraction of translational and rotational contributions results in

Ag Au
15 15



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 30 30 15
quadratic 900 465 240
cubic 27000 4960 2480
quartic 810000 40920 20520
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 15 15
quadratic 240 225
cubic 2480 2480
quartic 20520 20400

Number of independant internal coordinates 15

Literature




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