Halogenverbrückte Heterometallatomcluster der drei Typen Re2(CO)4L2(μ-X)2(μ-Y) (L = (C6H5)3P; X = Br,I; Y = GaRe(CO)4ax-L), Re2(CO)6L2(μ-X)(μ-GaX2) (X = I) und Re3(CO)9L3(μ-X)3(μ-Y) (X = Cl) |
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Authors: | H.-J. Haupt,P. Balsaa,U. Fl rke |
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Affiliation: | H.-J. Haupt,P. Balsaa,U. Flörke |
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Abstract: | Halogeno-Bridged Heteronuclear Metal Atom Clusters of the Three Types Re2(CO)4L2(μ-X)2(μ-Y) (L = (C6H5)3P; X = Br, I; Y = GaRe(CO)4ax-L), Re2(CO)6L2(μ-X) (μ-GaX2) (X = I), and Re3(CO)9L3 (μ-X)3(μ3-Y) (X = Cl) The title compounds of the both types Re2(CO)4L(μ-X)2(μ-Y) [L = (C6H5)3P; X = Br, I; Y = GaRe(CO)4ax-L] and Re3(CO)9L3(μ-X)3 (μ3-Y) (X = Cl) were prepared by the reaction of GaX3 (X = Cl, Br, I) and Re2(CO)8(ax-L)2 in boiling mesitylene solution. The obtained substance Re2(CO)4L2(μ-I)2(μ-Y) and carbon monoxide gave the compound of the third type Re2(CO)6L2(μ-I)(μ- GaI2). The last-named single iodo-bridged dirhenium cluster could be therefore a precursor complex of the double iodo-bridged compound. The four diamagnetic substances were characterized by 31P n.m.r. spectroscopy and their molecular structures were acertained by X-ray measurements. The result of the single crystal X-ray analysis of Re2(CO)4L2(μ-Br)2 [μ-GaRe(CO)4ax-L], a bridged coordination octahedron pair with a common face, and that of the edge-bridged pair Re2(CO)6L2(μ-I)(μ-GaI2) each possessing a Re? Re bond are especially treated in the present work. |
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