K. Onitsuka et al., SYNTHESES AND PROPERTIES OF FERROCENYLETHYNYL TRANSITION-METAL COMPLEXES OF PLATINUM, PALLADIUM, AND NICKEL, Bulletin of the Chemical Society of Japan, 67(9), 1994, pp. 2611-2613
Square planar ferrocenylethynyl transition metal complexes M(C=CFc)2(P
R3)2 (M = Pt, Pd, Ni; Fc = (C5H4)Fe(C5H5)) were prepared by the reacti
on of MCl2(PR3)2 with ethynylferrocene in the presence of a CuI cataly
st in diethylamine, and characterized by spectral analyses. An interac
tion between transition metals and an iron atom was studied by using e
lectronic spectroscopy.