Syntheses, characterization and reactions of some methyl derivatives of platinum(II). Part I.

Abstract

Reactions of [Pt(COD)(CH 3) 2] (where COD = 1, 5-cyclooctadiene) with the mixed bidentate ligands, 8-(diphenylarsino)quinoline (N-As), 8-diphenylphosphino)quinoline (N-P), 1-thiomethyl)-2- (diphenylarsino)ethane (S-As) and 1-(thiomethyl)-2- (diphenylphosphino)ethane (S-P), gave a series of dimethyl platinum(II) complexes, [Pt(L-L′)(CH 3) 2] (where L-L′= N-As, N-P, S-As, S-P). Reaction of methyllithium with [Pt(L-L′)Cl 2] (where L-L′= S-As, S-P) and [PtL 2Cl 2] (where L = diphenyl(2-phenylethyl)phosphine (PE), or diphenyl(1-naphthyl)phosphine (PN)) gave the dimethyl complexes, [Pt(L-L′)(CH 3) 2] and cis-[Pt(L) 2(CH 3) 2], respectively. Reactions of [Pt(L-L′)(CH 3) 2] (where L-L′ = S-As, S-P) with hydrogen chloride or hydrochloric acid have been investigated. The complexes were characterized by elemental analysis, IR, 1H NMR and 13C NMR spectral data; trends in the 1H NMR spectroscopic parameters are discussed.