Synthesis and characterization of methylplatinum(II)O,O′-dialkyl dithiophosphates. Crystal structure of [PtMe{S2P(OPri)2}(AsPh3)]

Abstract

Methylplatinum(II)O,O′-dialkyl dithiophosphates of the type [PtMe{S₂P(OR)₂}L] and [PtMe{S₂P(OR)₂}(L–L)][R = Et or Prⁱ; L = PPh₃, P(C₆H₄Me-p)₃, P(OPh)₃ or AsPh₃; L–L = Ph₂PCH₂CH₂PPh₂ or Ph₂PCH₂CH₂AsPh₂] have been synthesized. They were characterized by elemental analyses and NMR (¹H and ³¹P) data. A single-crystal X-ray structure determination of [PtMe{S₂P(OPrⁱ)₂}(AsPh₃)] has established a chelated dithiophosphate ligand moiety. The four-membered metallacyclic PtS₂P ring is planar.