Chemistry of vinylidene complexes. XVIII. Synthesis and molecular structure of the novel trinuclear μ3-vinylidene complex CpReFePt(μ3-Cdouble bond; length as m-dashCHPh)(CO)6(PPh3)

The interaction between Cp(CO)2RePt(μ-Cdouble bond; length as m-dashCHPh)(PPh3)2 (1) and Fe2(CO)9 afforded the new heterometallic μ3-vinylidene cluster CpReFePt(μ3-Cdouble bond; length as m-dashCHPh)(CO)6(PPh3) (2). An X-ray diffraction study shows the complex 2 possesses a trimetallic Re–Fe–Pt chain core. The bond lengths are Re–Fe 2.8221(8), Fe–Pt 2.5813(8) Å; the Re⋯Pt distance is 3.3523(7) Å; the bond angle Re–Fe–Pt is 76.55(3)°. The μ3-Cdouble bond; length as m-dashCHPh ligand is η1-bound to the Re and Pt atoms and η2-coordinated to the Fe atom. The Cdouble bond; length as m-dashC bond length is 1.412(4) Å. The Pt atom is coordinated by the PPh3 and CO groups. Complex 2 is characterized by the IR and 1H, 13C and 31P NMR spectra.