Cyclopentadienyl-ruthenium and -osmium chemistry
作者： Michael I. Bruce , Mark G. Humphrey , Michael R. Snow , Edward R.T. Tiekink
DOI: 10.1016/0022-328X(86)80364-3
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摘要: Determinations of the crystal structures acetylide Ru(CCPh)(dppe)(η-C5H5), vinylidene [Ru(CCMePh)(PPh3)2(η-C5H5)]I and carbene [Ru{C(OMe)Et}(PPh3)2(η-C5H5)][PF6], have enabled comparison RuC(α) bonds in these a number related complexes. Cationic complexes RuC shorter (by 0.05–0.1 A) than values expected on basis normal covalent radii, but case vinyl there does not appear to be any significant shortening bond which can ascribed back-bonding from metal unsaturated carbon-bonded ligand. Ru(CCPh)(dppe)(η-C5H5) crystallises monoclinic space group P21/n, with 14.642(4), b 14.018(3), c 16.490(4) A, β 105.08(2)°, Z 4; orthorhombic P212121, 12.612(4), 15.607(3), 22.357(6) [Ru{C(OMe)Et}(PPh3)2(η-C5H5)][PF6 11.999(3), 14.948(1), 22.342(3) 4. For 4841, 2614 3299 data (I > 2.5σ(I), respectively, refinements converged R, Rw 0.038 0.048, 0.047 0.053, 0.040 0.044 for three
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