Tri- and tetra-nuclear homo- or hetero-metallic palladium(II) and platinum(II) complexes with double halide bridges. Molecular structure of [NBu4]2[(C6F5)2Pt(µ-Cl)2Pt(µ-Cl)2Pt(C6F5)2]
Abstract
By treating cis-[M(C6X5)2(thf)2](M = Pd or Pt, X = F or Cl, thf = tetrahydrofuran) with [M′X′4]2– or [M′2(µ-X′)2X′4]2–(M′= Pd or Pt; X′= Cl or Br) in a 2:1 ratio tri- or tetra-nuclear, homo- or heterometallic complexes of the types [NBu4]2[(C6X5)2M(µ-X′)2M′(µ-X′)2M(C6X5)2] or [NBu4]2[(C6X5)2M(µ-X′)2M′(µ-X′)2M′(µ-X′)2M(C6X5)2] can be obtained. The molecular structure of the trinuclear anion with M = M′= Pt, X = F, X′= Cl has been established by single-crystal X-ray crystallography. The anion is centrosymmetric, showing a square-planar PtCl4 central unit embraced by two Pt(C6F5)2 terminal moieties bonded to the central platinum atom through double chloride bridges.