ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Single-Crystal X-Ray Analysis of Compounds with a Covalent Metal-Metal Bond. VII. Crystal and Molecular Structure of the Halogeno-Bridged Dimers of Halogenobis(pentacarbonylrhenium)indium(III), [(Re(CO)5)2In(μ-X)]2 (X = Cl, Br, I)[(Re(CO)5)2In(μ-X)]2 crystallizes if X = Cl and X = Br in the monoclinic system, space group P21/c (No. 14), with the lattice constants X = Cl: a = 10.540(6), b = 12.961(7), c = 26.071(12) Å, β = 106.3(1) Å, Z = 4, X = Br: a = 10.548(9), b = 13.108(7), c = 26.192(15) Å, β = 106.0(2)°, Z = 4 and if X = I in the triclinic system, space group P1 (No. 2), with the lattice constants a = 10.739(2), b = 7.160(1), c = 13.647(1) Å, α = 68.65(9), β = 71.89(9), γ = 65.52(9)°, Z = 1.The central molecular fragment consists of a plane In2X2 ring with the mean In - X distances: X = Cl: 2.624(6) Å, X = Br: 2.764(3) Å and X = I: 2.986(2) Å and the angles In - X - In/X - In - X, X = Cl: 97.2(2)°/ 82.8(2)°, X = Br: 94.8(1)°/85.2(1)° and X = I: 96.47(5)°/83.53(5)°. Two Re(CO)5 groups are bonded to each of these In atoms to form a distorted tetrahedral coordination.The mean In - Re bond-distances are: X = Cl: 2.797(2), X = Br: 2.796(2) and X = I:2.811 (2) Å. There is a octahedral coordination around the Re atoms.
Notes:
[(Re(CO)5)2In(μ-X)]2 kristallisiert für X = Cl und X = Br monoklin, Raumgruppe P21/c, mit den Gitterkonstanten X = Cl: a = 10,540(6), b = 12,961(7), c = 26,071(12), β = 106,3(1), Z = 4; X = Br: a = 10,548(9), b = 13,108(7), c = 26,192(15), β = 106,0(2), Z = 4 und für X = I triklin, Raumgruppe P1, mit den Gitterkonstanten a = 10,739(2), b = 7,160(1), c = 13,647(1) Å, α = 68,65(9), β = 71,89(9), γ = 65,52(9)°, Z = 1. Das zentrale Molekülfragment besteht aus einem planaren In2X2-Ring mit mittleren In - X-Abständen von X = Cl: 2,624(6) Å, X = Br: 2,764(3) Å und X = I: 2,986(2) Å und den Winkeln In - X - In/X - In - X, X = Cl: 97,2(2)°/82,8(2)°, X = Br: 94,8(1)°/85,2(1)° und X = I: 96,47(5)°/83,53(5)°. An die Indiumatome sind jeweils zwei Re(CO)5-Gruppen so gebunden, daß sich für das Indium eine verzerrt tetraedrische Umgebung ergibt. Die mittleren In - Re-Bindungsabstände betragen: X = Cl: 2,797(2), X = Br: 2,796(2) und X = I: 2,811(2) Å. Die Rheniumatome besitzen oktaedrische Koordination.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19794480110
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