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SYNTHESIS AND STRUCTURE OF A HETEROBIMETALLIC Fe-Ni PHOSPHIDO BRIDGED COMPLEX; X-RAY CRYSTAL STRUCTURE OF (PMe3)(CO)3Fe(μ-t-Bu2P)Ni(PMe3)Cl, (Fe-Ni)

1988; Taylor & Francis; Volume: 17; Issue: 1 Linguagem: Inglês

10.1080/00958978808078446

1029-0389

Atta M. Arif, Don J. Chandler, Richard A. Jones,

Metal complexes synthesis and properties

Abstract Reaction of Fe(CO)3(t-Bu2PH)(t-Bu2PLi) with NiCl2(PMe3)2 gives the heterobimetallic ditertbutyl-phosphido bridged complex (PMe3)(CO)3Fe(μ-t-Bu2P)Ni(PMe3)Cl, (Fe-Ni), (1), (55%). The Fe atom bears three terminal CO groups and a PMe3 ligand in a roughly trigonal-bipyramidal geometry. The Fe-PMe3 ligand is trans to the μ-t-Bu2P group. The Ni atom is roughly planar with the Cl atom trans to the μ-t-Bu2P unit. Crystal data: (1) C17H36ClFeNiO3P3, M = 531.4 monoclinic, space group P21/c (No. 14), a = 17.363 (1) Å, b = 11.383 (2) Å, c = 13.308 (2) Å, β = 104.60 (1)°, U = 2545.1 (5) Å3, Dc = 1.387 g cm−3, Z = 4, μ(MoKα = 16.2 cm−1. Refinement of 1979 reflections (I > 3[sgrave](I)) out of 3537 unique observed reflections (2° < 2θ < 46°) gave R and R w values of 0.062 and 0.070 respectively. Data/parameter ratio 8.4, hydrogen atoms not located, λ(MoKx) = 0.71073 Å, (graphite monochromator); methods: MULTAN, difference Fourier, full-matrix least squares; all non-hydrogen atoms anisotropic.