Abstract
Biheterometallic chloro-bridged hydrido-species of type [L2HClRh(µ-Cl)2MClL′](L = PButPr2 or PPrBut2, M = Pd or Pt, L′= PEt3, PBu3, or PPr2But) are formed on mixing toluene solutions of square-pyramidal [RhHCl2L2]2(L = PPr2But or PPrBut2) and a chloro-bridged dimeric palladium or platinum complex, [M2Cl4L′2](M = Pt, L′= PEt3, PBu3, or PPr2But; M = Pd, L′= PBu3). On standing, in solution, at ambient temperature these biheterometallic complexes decompose, giving rise to mixed tertiary-phosphine complexes of type trans-[MCl2LL′]. The rate of this reaction is strongly dependent on the nature of both M and L. The 1H and 31P n.m.r. data of the com-plexes are reported.
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