The first palladium(II) complexes containing arsino(phosphino)methanes as ligands

摘要

Treatment of [PdCl2(R2AsCH2PPr2i)] (3a,b) with AgPF6 leads, depending on the reaction conditions, either to the formation of [{Pd(mu-Cl)(kappa(2)As,P-R2AsCH2PPr2i)}(2)](PF6)(2) (4a,b) or [Pd(CH3CN)(2)(kappa(2)As,P-R2AsCH2PPr2i)](PF6)(2) (5a,b); the methyl derivative [Pd(Me)(Cl)((Bu2AsCH2PPr2i)-As-t)] (7) reacts with Na[B(Ar-F)(4)] (Ar-F = C6H3(CF3)(2)-3,5) to afford the complex [Pd-2(Me)(2)(mu-Cl)(mu-(Bu2AsCH2PPr2i)-As-t)(2)][B(Ar-F)(4)] (8) of the A-frame type, which was characterized by X-ray structure analysis. [References: 20]