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6589069 
Journal Article 
Electro-optical parameters and polar tensors of some XY(4) type molecules 
Rathinavelou, G; Muthukannu, M; Chandrasekaran, G; , 
1996 
Yes 
Indian Journal of Pure and Applied Physics
ISSN: 0019-5596 
COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH 
NEW DELHI 
158-161 
WOS:A1996TY25500006 
Using the integrated infrared intensities corresponding to vibrational modes of some XY(4) [X = C, Si, Ge; Y = H, D, F] tetrahedral type molecules, the electro-optical parameters are claculated. The transformation matrix between normal coordinates and symmetry coordinates is obtained from virial theorem approach. The sign combinations are decided with reference to the equilibrium bond moments and bond lengths. Polar tensors of constituent atoms are calculated for preferred sign combinations and G sum rule is verified.