Russian Journal of Inorganic Chemistry, Vol. 42, No. 7, 1997, pp. 1064–1071. Translated from Zhurnal Neorganicheskoi Khimii, Vol. 42, No. 7, 1997, pp. 1180–1187.
Original Russian Text Copyright 1997 by Serezhkin, Buslaev.
Stereochemical Effect of Lone Pair Electrons in Antimony Fluorides
V. N. Serezhkin* and Yu. A. Buslaev**
*Samara State University, Samara, Russia
**Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 117907 Russia
Received November 22, 1996
Abstract—The features of the Sb(V) and Sb(III) coordination environment with fluorine atoms in the structures of 182 compounds are analyzed with the use of the Voronoi–Dirichlet (VD) polyhedra. In the coordination polyhedra SbFn , the volumes of the VD polyhedra of the antimony atoms are independent of their coordination number and only determined by the valence state of antimony. The influence of the stereochemically active lone pair electrons of Sb(III) atoms on the characteristics of their VD polyhedra is considered. In the structure of the Sb(III) compounds (unlike the Sb(V) compounds), the antimony atoms are considerably (~0.5 µ) and regularly displaced from the center of gravity of their VD polyhedra.