Synthesis and reactivity of binuclear homo- or hetero-metallic complexes [NBu4]2[MM′(µ-C6F5)2(C6F5)4](M = M′= Pd or Pt; M = Pt, M′= Pd) with bridging pentafluorophenyl groups

Abstract

By reacting [NBu₄]₂[M(C₆F₅)₄] with cis-[M(C₆F₅)₂(thf)₂](M = Pd or Pt; thf = tetrahydrofuran) in CHCl₃ the binuclear homo- or hetero-metallic complexes [NBu₄]₂[MM′(µ-C₆F₅)₂(C₆F₅)₄](M = M′= Pd or Pt; M = Pt, M′= Pd), containing bridging pentafluorophenyl groups, are obtained. Their structures have been established by ¹⁹F n.m.r. spectroscopy. The homometallic derivatives react with neutral (L) or anionic (X)^– ligands yielding [NBu₄][M(C₆F₅)₃L](M = Pd or Pt; L = PPh₃, CO, or ½Ph₂PCH₂PPh₂) or [NBu₄]₂[MX(C₆F₅)₃](M = Pd or Pt; X = Br), respectively. The heterometallic complex [NBu₄]₂[PdPt(µ-C₆F₅)₂(C₆F₅)₄] reacts with PPh₃ or Ph₂PCH₂PPh₂ giving rise to a mixture of cis-[Pd(C₆F₅)₂L₂] and [NBu₄]₂[Pt(C₆F₅)₄], while its reaction with CO yields a mixture of [NBu₄][Pt(C₆F₅)₃(CO)] and [NBu₄][Pd(C₆F₅)₃(CO)].