Five- and six-coordinate ruthenium complexes with the tridentate orthometallated aryl bisphosphine ligand [2,6-(Ph2PCH2)2C6H3]-

Article abstract of DOI:10.1016/S0022-328X(96)06926-4

A series of ruthenium complexes with the orthometallated ligand [2,6-(Ph₂PCH₂)₂C₆H₃]^- (PCP) was synthesized. Reaction of RuCl₂(PPh₃)₃ with 1,3-(Ph₂PCH₂)₂C₆H₄ produced the coordinatively unsaturated complex RuCl(PPh₃)(PCP), which was characterized by X-ray crystallography. Treatment of RuCl(PPh₃)(PCP) with 4-phenylpyridine (pyph) yielded RuCl(pyph)(PPh₃)(PCP). Treatment of RuCl(PPh₃)(PCP) with PMe₃ and CO generated RuCl(PMe₃)₂(PCP) and RuCl(CO)₂(PCP) respectively. Reactions of RuCl(PPh₃)(PCP) with NaH in THF and NaBH₄ in methanol gave RuH(PPh₃)(PCP) and RuH(CO)(PPh₃)(PCP) respectively. The hydride complex RuH(PMe₃)₂(PCP) was prepared by the reaction of RuCl(PMe₃)₂(PCP) with NaBH₄.