Synthesis, Structures, and Reactivities of Rhodium and Ruthenium Complexes with a Novel Chiral Cyclopentadienyl−Ferrocenyldiphenylphosphine Bidentate Ligand

Novel rhodium(I) and ruthenium(II) complexes with the chiral cyclopentadienyl−phosphine bidentate ligand PPFCp have been prepared and characterized crystallographically. The cationic ruthenium−vinylidene complex [Ru(C CHPh)(PPh 3 )(PPFCp)]PF 6, obtained from [RuCl(PPh 3 )(PPFCp)] and phenylacetylene, reacts with 1-buten-3-ol to afford 3-methyl-1-phenyl-4-penten-2-one in moderate yield with moderate enantioselectivity.