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


ABSTRACT: 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.

SUBMITTER: Arndt P 

PROVIDER: S-EPMC4384584 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature

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

Arndt Perdita P   Schubert Kathleen K   Burlakov Vladimir V VV   Spannenberg Anke A   Rosenthal Uwe U  

Acta crystallographica. Section E, Crystallographic communications 20150110 Pt 2


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 isostructu  ...[more]

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