Molecular structures of ruthenium half-sandwich complexes with primary and secondary phosphines: [(η6-p-cymene)RuCl2(PR3)] [p-cymene = 1-Me-4-PriC6H4; PR3 = PH2Fc, PH2CH2Fc, PH(CH2Fc)2; Fc = Fe(η5-C5H4)(η5-C5H5)]

A series of air-stable half-sandwich complexes of general formula [(η6-p-cymene)RuCl2(PR3)] [p-cymene = 1-Me-4-PriC6H4; PR3 = PH2Fc (1), PH(CH2Fc)2 (3); Fc = Fe(η5-C5H4)(η5-C5H5)] were synthesized from [{(p-cymene)RuCl2}2] and the corresponding phosphine and fully characterized by IR and NMR (1H, 13C, 31P) spectroscopy. Molecular structures of [(η6-p-cymene)RuCl2(PR3)] [PR3 = PH2Fc (1), PH2CH2Fc (2), PH(CH2Fc)2 (3)] are reported.