Reduction formula for point group D7

Your representation

E 2C7 2(C7)2 2(C7)3 7C'2
42 0.0000 0.0000 -0.0000 -2

can be reduced to

A1 A2 E1 E2 E3
2 4 6 6 6

Substraction of translational and rotational contributions results in

A1 A2 E1 E2 E3
2 2 4 6 6


Force field analysis

Infrared and Raman activities (harmonic approximation)
Method A1 A2 E1 E2 E3
Infrared - + + - -
Raman + - + + -

Number of force field parameters
Force field No. 1 No. 2 No. 3
linear 36 36 2
quadratic 1296 666 58
cubic 46656 8436 600
quartic 1679616 82251 5962
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 A1 A2 E1 E2 E3
linear 2 2 4 6 6
quadratic 58 40 97 94 93
cubic 600 600 1204 1206 1208
quartic 5962 5791 11752 11749 11748

Number of independant internal coordinates 2

Literature



Character tables for chemically important point groups Character table for point group D7 Constructor University Bremen
Last update November, 13th 2023 by A. Gelessus, Impressum, Datenschutzerklärung/DataPrivacyStatement