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The Tetrachloridoaurates(III) of Zinc(II) and Cadmium(II)
Author(s) -
Landvogt Christian,
Beck Johannes
Publication year - 2018
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.201700455
Subject(s) - octahedron , chemistry , zinc , crystallography , crystal structure , molecule , ion , inorganic chemistry , organic chemistry
The first salt‐like compounds of dications with [AuCl 4 ] – anions are reported. The compounds Zn[AuCl 4 ] 2 · (AuCl 3 ) 1.115 ( 1 ) and Cd[AuCl 4 ] 2 ( 2 ) are obtained from reactions of M Cl 2 ( M = Zn, Cd) and elemental gold in liquid chlorine at ambient temperature under autogenous pressure and subsequent annealing at 230 °C. The structure of 1 represents an incommensurately modulated composite [superspace group C 2/ c ( α 0 γ )0 s ] built of two subsystems. The first subsystem contains chains of zinc(II) tetrachloridoaurate(III), which feature a slightly distorted octahedral coordination of Zn and can be described by the Niggli formula 1 ∞ {Zn[AuCl 4 ] 1/1 [AuCl 4 ] 2/2 }. The second subsystem consists of Au 2 Cl 6 molecules, which are located in channels built up by the first subsystem. The structural parameters of the hosted Au 2 Cl 6 molecules show only small deviations from neat AuCl 3 . The crystal structure of Cd[AuCl 4 ] 2 ( 2 ) consists of chains built of Cd 2+ ions coordinated by bridging [AuCl 4 ] – anions and alternating Cd‐Au sequence. Cd has a distorted octahedral coordination environment.