CRYSTALLOGRAPHY OF SULFIDES: COMPOSITION AND SYMMETRY VARIATIONS
S. V. Borisov, S. A. Magarill, N. V. Pervukhina
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: crystallographic analysis, symmetry of sulfide structures, cationic and anionic "skeletons", Tl cation in sulfides
Abstract
The factual material obtain in a crystallographic study of sulfides is used to show the role of symmetry in the formation of structures. Note is made of the fundamental contribution of mirror symmetry planes to the architecture of sulfide structures since they reveal the common basis, or common "gene", of these structures. Concrete examples are employed to analyze the genetic link between the popular structural types of sulfides. An account is given of the features of autonomous ordering in cationic and anionic matrices and the role of the big Tl cation in these processes.
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