Polymeric and bimetallic complexes of diisopropyl monothiophosphate

Abstract

The single stage preparation of M[O(S)P(OPrⁱ)₂]_n(n= 2, M = Zn 1, Co 2 or Cd 3; n= 1, M = NH₄⁺4) from HPO(OPrⁱ)₂, sulfur and ZnO, CoCO₃, CdCO₃ or NH₃ has been achieved. The reaction of 1 with cis-[PtCl₂(PMe₂Ph)₂] and [PPh₄][MCl₃(PMe₂Ph)](M = Pt or Pd) gave [(PMe₂Ph)₂Pt{O(S)P(OPrⁱ)₂}₂ZnCl₂]5 and [(PMe₂Ph)M{O(S)P(OPrⁱ)₂}₃ZnCl](M = Pd 6 or Pt 7) respectively. The crystal structures of 3, 6 and 7 have been determined. The cadmium complex 3 exists as Cd₂[O(S)P(OPrⁱ)₂]₃ units linked by additional monothiophosphate ligands into polymeric chains. Complexes 6 and 7 are isomorphous and contain tetrahedral zinc centres linked to square-planar platinum atoms with polymer formation being inhibited by the presence of PMe₂Ph ligands.