CRYSTALLOGRAPHIC ANALYSIS AND FEATURES OF CATION COORDINATION IN A SERIES OF STRUCTURES OF SULFIDES WITH Tl+
S. V. Borisov, S. A. Magarill, N. V. Pervukhina
Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia
Keywords: кристаллографический анализ, анионные "скелеты", катион Tl+ в сульфидах, координация Tl+, Tl+S-подрешетки, crystallographic analysis, anion skeletons, Tl+ cation in sulfides, Tl+ coordination, Tl+S sublattices
Abstract
A crystallographic analysis of ellisite Tl3AsS3, fangite Tl3AsS4, lorandite TlAsS2, and synthetic Tl3AsS3 shows that the configuration of atomic positions in these structures is determined mostly by the ordering of S2– anions and the large massive Tl+ cations in a single packing. The standard coordination of the As cation is provided only by the strong covalent As–S bonds; the environment of Tl+ cations varies depending on the geometry of their packing with sulfur.
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