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DOI: 10.1039/A808210C (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 759-764

A facile method for the synthesis of heterobimetallic chloro-bridged complexes containing (R3P)2MCl (M = Pt or Pd) fragments

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Kurt Polborn and Kay Severin

Abstract

A convenient synthesis of cationic, heterobimetallic complexes of general formulae [(R3P)2M1(µ-Cl)2M2(chel)]BF4, [(R3P)2M1(µ-Cl)2Rh(cod)]BF4 and [(R3P)2M1(µ-Cl)2M3(chel)]BF4 (M1, M2 = PdII or PtII; M3 = RhIII or IrIII, chel = anion of 2-phenylpyridine, benzo[h]quinoline, C6H5CHRNMe2 or η3-allyl) has been elaborated. These complexes were formed in quantitative yields by metathesis reactions of the dicationic complexes [{(R3P)2M1(µ-Cl)}2][BF4]2 with the corresponding neutral, homodimeric compounds [{(cod)Rh(µ-Cl)}2] and [{(chel)M3(µ-Cl)}2]. Reactions with half-sandwich complexes such as [{([hair space]p-cym)RuCl(µ-Cl)}2], (cym = cymene), on the other hand, were shown to result in chloride transfer. The structures of [(Bu3P)2Pt(µ-Cl)2Pd(η3-C3H5)]BF4 and [(Bu3P)2Pt(µ-Cl)2Rh(bzq)2]BF4 (bzq = benzo[h]quinoline anion) were determined by X-ray diffraction analyses.

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