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?-Oxido-bis-[bis-(penta-fluoro-phenolato)(?-penta-methyl-cyclo-penta-dien-yl)titanium(IV)].

ABSTRACT: The dinuclear title complex, [Ti(2)(C(10)H(15))(2)(C(6)F(5)O)(4)O], features two Ti(IV) atoms bridged by an O atom, which lies on an inversion centre. The Ti(IV) atom is bonded to a ?(5)-penta-methyl-cyclo-penta-dienyl ring, two penta-fluoro-phenolate anions and to the bridging O atom. The environment around the Ti(IV) atom can be considered as a distorted tetra-hedron. The cyclo-penta-dienyl ring is disordered over two sets of sites [site occupancy = 0.824?(8) for the major component].

SUBMITTER: Lee J

PROVIDER: S-EPMC3212204 | biostudies-other | 2011 Aug

REPOSITORIES: biostudies-other

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μ-Oxido-bis-[bis-(penta-fluoro-phenolato)(η-penta-methyl-cyclo-penta-dien-yl)titanium(IV)].

Lee Junseong J Kim Youngjo Y

Acta crystallographica. Section E, Structure reports online 20110730 Pt 8

The dinuclear title complex, [Ti(2)(C(10)H(15))(2)(C(6)F(5)O)(4)O], features two Ti(IV) atoms bridged by an O atom, which lies on an inversion centre. The Ti(IV) atom is bonded to a η(5)-penta-methyl-cyclo-penta-dienyl ring, two penta-fluoro-phenolate anions and to the bridging O atom. The environment around the Ti(IV) atom can be considered as a distorted tetra-hedron. The cyclo-penta-dienyl ring is disordered over two sets of sites [site occupancy = 0.824 (8) for the major component]. ...[more]

PMID: 22090906

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Crystal structure of di-n-but-yl-bis-(? (5)-penta-methyl-cyclo-penta-dien-yl)hafnium(IV).

Project description:The crystal structure of the title compound, [Hf(C10H15)2(C4H9)2], reveals two independent mol-ecules in the asymmetric unit. The diffraction experiment was performed with a racemically twinned crystal showing a 0.529?(5):0.471?(5) component ratio. Each Hf(IV) atom is coordinated by two penta-methyl-cyclo-penta-dienyl and two n-butyl ligands in a distorted tetra-hedral geometry, with the cyclo-penta-dienyl rings inclined to one another by 45.11?(15) and 45.37?(16)°. In contrast to the isostructural di(n-butyl)bis(? (5)-penta-methyl-cyclo-penta-dien-yl)zirconium(IV) complex with a noticeable difference in the Zr-butyl bonding, the Hf-Cbut-yl bond lengths differ from each other by no more than 0.039?(3)?Å.

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