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)].