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Di-?-hydroxido-bis-[tris-(4,4,4-trifluoro-1-phenyl-acetyl-acetonato-?O,O')hafnium(IV)] dimethyl-formamide disolvate.

ABSTRACT: The binuclear molecule of the title compound, [Hf(2)(C(10)H(6)F(3)O(2))(6)(OH)(2)]·2C(3)H(7)NO, lies across an inversion centre and contains a Hf(IV) atom which is eight-coordinated and surrounded by three chelating ?-diketonato tris-(4,4,4-trifluoro-1-phenyl-acetyl-acetonate (tfba(-)) ligands and two bridging OH(-) groups in a distorted square-anti-prismatic geometry. The Hf-O bond lengths vary from 2.073?(2) to 2.244?(2)?Å and the O-Hf-O bite angles vary from 73.49?(9) to 75.60?(9)°. Weak O-H?O hydrogen-bonding inter-actions are observed between the bridging hy-droxy groups and the dimethylformamide solvent mol-ecules. The unit cell contains solvent-accessible voids of 131?Å(3), but the residual electron density in the difference Fourier map suggests no solvent mol-ecule occupies this void.

SUBMITTER: Viljoen JA

PROVIDER: S-EPMC3238724 | biostudies-literature | 2011 Dec

REPOSITORIES: biostudies-literature

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Di-μ-hydroxido-bis-[tris-(4,4,4-trifluoro-1-phenyl-acetyl-acetonato-κO,O')hafnium(IV)] dimethyl-formamide disolvate.

Viljoen J Augustinus JA Visser Hendrik G HG Roodt Andreas A

Acta crystallographica. Section E, Structure reports online 20111125 Pt 12

The binuclear molecule of the title compound, [Hf(2)(C(10)H(6)F(3)O(2))(6)(OH)(2)]·2C(3)H(7)NO, lies across an inversion centre and contains a Hf(IV) atom which is eight-coordinated and surrounded by three chelating β-diketonato tris-(4,4,4-trifluoro-1-phenyl-acetyl-acetonate (tfba(-)) ligands and two bridging OH(-) groups in a distorted square-anti-prismatic geometry. The Hf-O bond lengths vary from 2.073 (2) to 2.244 (2) Å and the O-Hf-O bite angles vary from 73.49 (9) to 75.60 (9)°. Weak O-H⋯ ...[more]

PMID: 22199601

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