Reduction formula for point group C2h

Your representation

E C2 (z) i h
72 0 0 8

can be reduced to

Ag Bg Au Bu
20 16 16 20

Substraction of translational and rotational contributions results in

Ag Bg Au Bu
19 14 15 18



Force field analysis

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

Number of force field parameters
Force field No. 1 No. 2 No. 3
linear 66 66 19
quadratic 4356 2211 586
cubic 287496 50116 12634
quartic 18974736 864501 216875
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 Bg Au Bu
linear 19 14 15 18
quadratic 586 536 537 552
cubic 12634 12424 12458 12600
quartic 216875 215656 215690 216280

Number of independant internal coordinates 19

Literature




Character tables for chemically important point groups Character table for point group C2h Jacobs University Bremen