摘要:
Treatment of the complexes cis-[PtCl2L2] (L = donor ligand) with phenylphosphonic acid, methylphosphonic acid, phenyl dihydrogenphosphate or phenylarsonic acid in the presence of an excess of silver(I) oxide in refluxing dichloromethane yielded the new metallacyles [activated Pt{OP(O)(Ph)O}L2], [activated Pt{OP(O)(Me)O}L2], [activated Pt{OP(O)(OPh)O}L2] or [activated Pt{OAs(O)(Ph)O}L2] respectively. The X-ray crystal structure of [activated Pt{OP(O)(Ph)O}(PMePh2)2] showed the presence of a slightly puckered metallacyclic ring with the phosphoryl oxygen adopting an equatorial position. A decomposition product of the complex [activated Pt{OP(O)(Ph)O}{P(CH2Ph)Ph2}2] in solution was shown, via an X-ray crystal structure determination, to be the diorthometallated complex cis-[activated Pt(C6H4CH2PPh2)2].