Semiempirical Calculations of Valence Force Constants in C2X4, C3X4 and C4X4 Compounds

Abstract

Abstract e m ie m p iric a l C a lc u la tio n s o f V a le n c e F o rc e C o n s ta n ts in C 2X 4 , C3X4 a n d C 4X 4 C o m p o u n d s Valence force constants were calculated for C2X4, C3X4 and C4X4 (X = H, F, Cl, Br) with a point charge model using CNDO data. The magnitude of the valence force constants is discussed in terms of the polarization of the static electron distribution.