Mehrfachbindungen zwischen hauptgruppenelementen und übergangsmetallen: IV. Chrom-schwefel- und chrom-selen-bindungen: Knüpfung,umwandlungsreaktionen und alkylidenaddition |
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| Authors: | Wolfgang A. Herrmann Jürgen Rohrmann Adolf Schäfer |
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| Affiliation: | Institut für Anorganische Chemie der Johann WolfgangGoethe-Universität, Niederurseler Hang, D-6000 Frankfurt am Main 50 Deutschland |
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| Abstract: | New dinuclear chromium—sulfur complexes containing one or two sulfur atoms are formed upon reaction of the ionic complex K[(η5-C5Me5)Cr(CO)3] (Me = CH3; 1) with trithiazyl trichloride at temperatures below ambient. The μ(η1 :η2)-disulfur complex 2a of composition (η5-C5Me5)2Cr2(CO)5S2 undergoes concomitant CO-elimination and desulfurization on heating or in the presence of triphenylphosphine; the CrSCr-complex (η5-C5Me5)2Cr2(CO)4S (2c) is formed in these cases. When diazomethane is treated with 2a, a novel μ,η2-thio- formaldehyde complex (2d) results, again following CO- and S-extrusion. While the triple-bonded CrSCr-skeleton present in 2c does not allow alkylidene additions, such reactions, which proceed cleanly, are observed with the corresponding μ5-seleno derivative (η5-C5H5)2Cr2(CO)4Se (4) synthesized from Na[(η5-C5H5)Cr(CO)3] and sodium selenite in the presence of hydrochloric acid. |
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| Keywords: | Authors to whom correspondence should be addressed. |
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