Synthesis and characterization of some methyl complexes of palladium(II). Part 2(1)

Summary Dichloro complexes of Pd^II, Pd(L–L)Cl₂], where L–L=1-(thiomethyl)-2-(diphenylarsino)ethane (S–As) or 1-(thiomethyl)-2-(diphenylphosphino)ethane (S–P) andtrans-PdL₂Cl₂], where L=diphenyl(2-phenylethyl)-phosphine (PE), diphenyl(1-naphthyl)phosphine (PN) orN-methyl-2-thiophenealdimine (SN), have been prepared and characterized. The reactions of these complexes with MeLi were investigated. The dimethyl complexes Pd(L–L)Me₂] (L–L=S–As, S–P) and Pd(PE)Me₂] were isolated and characterized. Reaction of Pd(L–L)Me₂] (L–L=S–As, S–P) with HCl affords the monomethyl derivatives Pd(L–L)Me(Cl)]. In contrast to the Pt analogues, Pd(L–L)Me₂] and Pd(L–L)Me(Cl)] are relatively less stable than Pt(L–L)Me₂] and Pt(L–L)Me(Cl)].