Voronoi-Dirichlet Polyhedra for Uranium(VI) Atoms in Oxygen-Containing Compounds

Russian Journal of Coordination Chemistry, Vol. 21, No. 3, 1995, pp. 153-161. Translated from Koordinatsionnaya Khimiya, Vol. 21, No. 3, 1995, pp. 163-171. Original Russian Text Copyright 1995 by Serezhkin, Blalov,Shevchenko

Voronoi-Dirichlet Polyhedra for Uranium(VI) Atoms in Oxygen-Containing Compounds

V. N. Serezhkin, V. A. Blatov, and A. P. Shevchenko

Samara State University, Samara, Russia

Received March 14,1994

Abstract - The geometric characteristics of Voronoi-Dirichlet polyhedra (VDP) for 354 U(VI) atoms in the structures of oxygen-containing compounds are established. It is shown that the volumes of VDPs, as distinct from the volumes of the corresponding coordination polyhedra, are virtually independent of the coordination numbers of uranium atoms and are on average 9.18(25) µ³. The results obtained are in agreement with the previously suggested model of deformable spheres describing the packing of structural units in uranium(VI) compounds.