Reduction formula for point group Ci

Your representation

E i
57 -3

can be reduced to

Ag Au
27 30

Substraction of translational and rotational contributions results in

Ag Au
24 27



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 51 51 24
quadratic 2601 1326 678
cubic 132651 23426 11672
quartic 6765201 316251 158355
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 24 27
quadratic 678 648
cubic 11672 11754
quartic 158355 157896

Number of independant internal coordinates 24

Literature




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