MAIN PRINCIPLES IN SOLID-STATE COORDINATION CHEMISTRY OF SB AND BI COMPOUNDS .1. STRUCTURE OF TETRAKIS(DIMETHYLAMMONIUM) CHLORIDE HEXACHLOROBISMUTHATE(III), ([(CH3)2NH2]+)4.CL-.[BICL6]3-

被引:17
作者
HERDTWECK, E
KREUSEL, U
机构
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D O I
10.1107/S0108270192007017
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
M(r) = 641.5, orthorhombic, P2(1)2(1)2, a = 10.342 (1), b = 13.510 (1), c = 8.693 (1) angstrom, V = 1215 angstrom, Z = 2, D(x) = 1.754 g cm-3, lambda(Cu Kalpha) = 1.54184 angstrom, mu = 200.1 cm-1, F(000) = 620, T = 293 K, R = 0.059, wR = 0.068, for 2059 observed reflections. The nearly perfect octahedral Cl coordination around the Bi atom shows crystallographic twofold symmetry. Both ionic interactions and strong hydrogen bridging including the N-bonded H atoms [H(11), H(12), H(21) and H(22)] and all covalent bonded Cl atoms [Cl(1), Cl(2), Cl(3)] together with an interstitial Cl atom [Cl(4)] build up a three-dimensional network with distances N-H...Cl in the range 3.02 (2)-3.57 (2) angstrom. The relatively high thermal parameters for Cl(4) are typical for non-coordinated atoms involved in strong hydrogen bonds. Although the site-specific symmetry allows distortion of the [BiCl6]3- octahedron, no stereochemical activity of the lone pair is observed.
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页码:318 / 320
页数:3
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