Synthesis of monomeric and oligomeric bis(acetylide) complexes of platinum and rhodium
Abstract
Treatment of the complexes trans-[M(PBu3)2Cl2](M = Ni, Pd or Pt) with one equivalent of the reagent Me3SnCC–R–CCSnMe3(R =p-C6H4) affords the polymeric species trans-[–M(PBu3)2-CC–R–CC–]n, where as if two equivalents of the tin reagent are used in this reaction, when M = Pt, the complex trans-[Me3SnCC–R–CC–Pt(PBu3)2-CC–R–CCSnMe3] may be isolated, a precursor for further syntheses; the complex mer-trans-[Rh(PMe3)3(SnMe3)(CCPh)2] has been prepared by the addition of Me3SnCCPh to [Rh(PMe3)4][Cl], and this latter species, when treated with Me3SnCC–R′–CCSnMe3(R′=p-C6H4–C6H4–p), affords the oligomeric compound mer-trans-[–Rh(PMe3)3(SnMe3)–CC–R′–CC–]n.