Preparation and properties of [M(S2N2H)Cl(L)](M = Pt, L = PMe2Ph or C2H4; M = Pd, L = PMe2Ph), [Pt(S3N)Cl(PMe2H)], and corresponding 15N-enriched complexest

Abstract

Reaction of [PPh₄][MCl₃(PMe₂Ph)](M = Pt or Pd) with [Sn(S₂N₂)Me₂]₂ leads to [M(S₂N₂H)Cl-(PMe₂Ph)]; similarly K[PtCl₃(C₂H₄)] reacts to give [Pt(S₂N₂H)Cl(C₂H₄)]. The complex [Pt(S₂N₂H)Cl(PMe₂Ph)](1a) is also formed in the reaction of S₄N₄ with [PtCl₂(PMe₂Ph)₂] at 160 °C, together with [Pt(S₃N)Cl(PMe₂Ph)](2); S₄¹⁵N₄ reacts to give ¹⁵N-enriched (1a) and (2), the ³¹P n.m.r. spectra of which show the presence of both ²J- and ⁴J-(¹⁵N–³¹P) couplings.