Mononuclear Ruthenium and Hetero-Tetero-Tetranuclear Ruthenium-Silver Complexes Containing the Unsymmetrical Bidentate Ligands R_2P(CH_2)_nER'_2(n=1,2; E=P,As) as Chelating or Bridging Units

摘要

The chelate complexes [(p-cym)RuCl(#kappa#~2-Ph_2PCH_2CH_2AstBu_2)]PF_6 (3),[(arene)RuCl(#kappa#~2-Ph_2PCH_2)]PF_6 (4,7,8)and [(p-cym)RuCl(#kappa#~2-iPr_2PCH_2AstBu_2)]PF_6 (11) were prepared either from [(arene) RuCl(NCMe)_2]PF_6 (1,5) or from [(arene) RuCl_2]_2 (2,6),in the presence of NH_4PF_6 or AgPF_6. The stepwise reactin of [(p-cym)RuCl_2]_2 (2) with Ph_2PCH_2CH_2PtBu_2 and AgPF_6 gave the hetero-tetranuclear compound [{(p-cym)RuAg(#mu#-Cl)_2(#mu#-P_(Ru)~1,P_(Ag)~2-Ph_2P~1CH_2CH_2P~2-tBu_2)}_2](PF_6)_2 (9), the structure of which was determined by an X-ray crystal structure analysis. The bidentate As,O donor Ph_2P(O)CH_2CH_2AstBu_2 also reacted with 2, in the presence of AgPF_6, to afford the chelate complex [(p-cym)RuCl{#kappa#~2(As,O)-Ph_2P(O)CH_2CH_2AstBu_2}]PF_6 (10), which wa also characterized crystallographically.