A Ditopic Phosphane-decorated Benzenedithiol as Scaffold for Di- and Trinuclear Complexes of Group-10 Metals and Gold |
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| Authors: | Simon H Schlindwein Carlo Sibold Mareike Schenk Mark R Ringenberg Christoph M Feil Martin Nieger Dietrich Gudat |
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| Institution: | 1. Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany;2. Department of Chemistry, University of Helsinki, 00014 Helsinki, Finland |
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| Abstract: | The ability of 3-(diphenylphosphinomethyl)-benzene-1,2-dithiol (pbdtH2) to act as ditopic ligand was probed in reactions with selected group-10-metal complexes. Reactions with (cod)PdCl2] afforded a mixture of products identified as Pd(pbdtH)2], Pd2(μ2-pbdt)2] and Pd3(μ2-pbdt)2Cl2]. The polynuclear complexes could be isolated after suitably adjusting the reaction conditions, and heating of a mixture in a microwave reactor effected partial conversion into a further complex Pd3(μ2-pbdt)3]. Reaction of pbdtH2 with Ni(H2O)6Cl2] gave rise to a complex Ni2(μ2-pbdt)2], which was shown to undergo two reversible 1e–-reduction steps. Reaction of Pd(pbdtH)2] with Au(PPh3)Cl] afforded heterotrinuclear PdAu2(μ2-pbdt)2(PPh3)]. All complexes were characterized by analytical, spectroscopic and single-crystal X-ray diffraction studies. Their molecular structures confirm the ability of the pbdt2– unit to support simultaneous P,S- and S,S-chelating coordination to two metal centers. |
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| Keywords: | P ligands S ligands Bridging ligands Group-10 metals Microwave assisted synthesis |
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