The preparation and structural characterisation of thiolato anions of bismuth(III) |
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| Authors: | Jonathan PH Charmant AGuy Orpen |
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| Institution: | School of Chemistry, The University of Bristol, Bristol BS8 1TS, UK |
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| Abstract: | The preparation and structures of the bismuth thiolato anions Bi2(SC6F5)6(μ-SC6F5)]− and Bi2(SC6F5)6(μ-SC6F5)2]2− and the halothiolato anions Bi2(SC6F5)6(μ-Br)]−, Bi2(SC6F5)6(μ-Cl)2]2− and Bi3(SC6F5)9(μ-Br)2]2− are described. All compounds have been isolated from reactions between Bi(SC6F5)3 and ammonium or phosphonium halides. The basic structural units in the dinuclear species are of two types namely Bi2(SR)6(μ-X)]− and Bi2(SR)6(μ-X)2]2−, where X=thiolate or halide. In the former case the single bridging groups occupy an axial site within the disphenoidal (equatorially vacant, trigonal bipyramidal) geometry around the bismuth centres whereas in the latter the two bridging groups occupy cis basal sites in square based pyramidal bismuth environments. The trinuclear anion Bi3(SC6F5)9(μ-Br)2]2− has features in common with the basic Bi2(SC6F5)6(μ-Br)]− unit. |
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| Keywords: | Bismuth(III) Thiolato anions Halothiolato anions X-ray crystallography |
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