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Divalent Titanium: The Halides ATiX 3 (A = K, Rb, Cs; X = Cl, Br, I)
Author(s) -
Jongen Liesbet,
Gloger Thomas,
Beekhuizen Jan,
Meyer Gerd
Publication year - 2005
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200400464
Subject(s) - halide , alkali metal , octahedron , crystallography , ternary operation , chemistry , divalent , titanium , crystal structure , type (biology) , inorganic chemistry , perovskite (structure) , hexagonal crystal system , organic chemistry , ecology , computer science , programming language , biology
Within the 3×3 library of ternary alkali halides of titanium(II), ATiX 3 (A = K, Rb, Cs; X = Cl, Br, I), five compounds were synthesized by conproportionation reactions. Single crystals were grown and the structures determined by single‐crystal X‐ray techniques. The halides ATiX 3 crystallize either with the so‐called hexagonal perovskite type structure (CsNiCl 3 , 2H), or with the so‐called KNiCl 3 ‐type of structure. This latter type allows two structural degrees of freedom. First, a shift of the colums of face‐sharing [TiCl 6 ] octahedra against each other and, secondly, a rotation of these colums relative to each other. With these degrees of freedom, individual coordination spheres are designed for the alkali‐metal cations A + .