Abstract
The Voronoi-Dirichlet polyhedra (VDP) and the method of intersecting spheres were used to carry out crystal chemical analysis of 141 chlorides containing 245 crystallographic sorts of potassium atoms in the KCl n coordination polyhedra. The potassium atoms in the crystal structures can coordinate 6 to 12 chlorine atoms, the K-Cl bond lengths varying from 2.81 to 3.91 A. The radius of spherical domains whose volume coincides with the volume of potassium VDP was found to be virtually independent of the coordination number or the shape of the coordination polyhedron, being equal to 1.93(4) A. The VDP characteristics were used to analyze the stereochemical features of potassium in the crystal structures.
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