Boron halides as reagents in inorganic syntheses. Part III. Preparation and characterisation of halogen- and pseudohalogen-bridged, binuclear, cationic complexes of platinum(II)

Abstract

The reactions of boron halides BX₃(X = F, Cl, or Br) with the square-planar platinum(II) complexes cis-L₂PtY₂(L = Buⁿ₃P; Y = Cl, Br, NCO, or N₃) yield halogen-bridged, binuclear, cationic complexes [L₂PtY]₂²⁺ or [L₂PtX]₂²⁺. I.r., ¹¹B n.m.r., ³¹P n.m.r. spectra, and conductivity measurements serve to identify the cations. The nature of the anions, which is more complicated to define, is also discussed in the light of spectroscopic and analytical data. The cationic complexes afford cis-L₂PtY₂ or cis-L₂PtX₂, B(OH)₃, and HX when treated with cold water.