The preparation and characterisation of (disulphur dinitrido)bis(phosphine) complexes, [M(S2N2)(PR3)2](M = Pt, PR3= PMe3, PMe2PH, PMePh2, PPh3, PEt3, PPrn3, PBun3, or ½Ph2PCH2CH2PPh2; M = Pd, PR3=½Ph2PCH2CH2PPh2). X-Ray crystal structure of [Pt(S2N2)(PMe3)2]

Abstract

Reaction of Na(S₃N₃) with [MCl₂(PR₃)₂](M = Pt, PR₃= PMe₃, PMe₂Ph, PMePh₂, PPh₃, PEt₃, PPrⁿ₃, PBuⁿ₃ or ½Ph₂PCH₂CH₂PPh₂; M = Pd, PR₃=½Ph₂PCH₂CH₂PPh₂) gives complexes of the type [M(S₂N₂)(PR₃)₂] in high yield (quantitatively by ³¹P n.m.r. > 60% isolated). The identity of the complexes was established by ³¹P n.m.r., i.r., microanalysis and, in the case of [Pt(S₂N₂)(PMe₃)₂], by X-ray crystallography.