Tris(η5-cyclopentadienyl)hafnium(III)
نویسندگان
چکیده
In the crystal structure of the title compound, [Hf(C(5)H(5))(3)], three cyclo-penta-dienyl ligands surround the Hf(III) atom in a trigonal-planar geometry. The mol-ecule lies on a sixfold inversion axis.
منابع مشابه
Crystal structure of (1,3-di-tert-butyl-η5-cyclopentadienyl)trimethylhafnium(IV)
The mol-ecule of the title organometallic hafnium(IV) com-pound, [Hf(CH3)3(C13H21)] or [HfMe3(η(5)-C5H3-1,3- (t) Bu2)], adopts the classical three-legged piano-stool geometry for mono-cyclo-penta-dienylhafnium(IV) derivatives with the three methyl groups bonded to the Hf(IV) atom at the legs. The C atoms of the two tert-butyl group bonded to the cyclo-penta-dienyl (Cp) ring are 0.132 (5) and 0....
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The title compound, [Hf(C5H5)2(C8H16)], proves a structural motif of hafna-cyclo-pentane besides the coordination of two cyclo-penta-dienyl ligands in an η(5)-fashion. The hafna-cyclo-pentane ring has a twist conformation and is substituted by two ethyl groups in the β,β'-positions, which are trans orientated to each other. One cyclo-penta-dienyl ring and one ethyl group are each disordered ove...
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The title compound, [HfW(C(5)H(5))(2)(C(7)H(5)O)Cl(CO)(5)] or [W(CO)(5)(C(7)H(5)O){Hf(C(5)H(5))(2)Cl}], contains two metal centres, with a (tungstenpenta-carbon-yl)oxy-phenyl-carbene unit coordinated to a hafnocene chloride. The Hf-O-C angle is nearly linear, and the C=O distance is slightly shorter than for equivalent alkoxy-carbenes. One of the cyclo-penta-dienyl (Cp) rings undergoes an offse...
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The title compound, [Mo(C5H5)(C2H3O)(C12H9O3P)(CO)2], was prepared by reaction of [Mo(C5H5)(CO)3(CH3)] with tris-(furan-2-yl)phosphane. The Mo(II) atom exhibits a four-legged piano-stool coordination geometry with the acetyl and phosphine ligands trans to each other. The O atom of the acetyl ligand points down, away from the Cp ring. In the crystal, mol-ecules form centrosymmetrical dimers via ...
متن کاملDi-μ-tert-butanolato-bis[bis(η5-cyclopentadienyl)erbium(III)]
In the centrosymmetric title compound, [Er(2)(C(5)H(5))(4)(C(4)H(9)O)(2)], each Er atom is in a distorted tetra-hedral coordination environment, coordinated by two cyclo-penta-dienyl rings and two tert-but-oxy groups, forming a dimeric complex bridged through the tert-but-oxy groups.
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