Russian Journal of Coordination Chemistry, Vol. 22, No. 9, 1996, pp. 605-607. Translated from Koordinatsionnaya Khimiya, Vol. 22, No. 9, 1996, pp. 645-647. Original Russian Text Copyright 1996 by Serezhkin, Blalov, Kuklina.

The Voronoi-Dirichlet Polyhedrons of Zr(IV) Atoms in Fluorine-containing Compounds

V. N. Serezhkin, V. A. Blatov, and E. S. Kuklina

Samara State University, Samara, Russia

Received November 17,1995

Abstract. The geometric characteristics of the Voronoi-Dirichlet polyhedrons are determined for 79 crystallographic types of Zr(IV) atoms whose positions in crystal structures are surrounded by fluorine atoms. The volumes of the Voronoi-Dirichlet polyhedrons are found to be virtually independent of the coordination number (6, 7, or 8) of the zirconium atoms, and their average value is 8.0(2) µ3.