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Di-?-hydroxido-bis[tris(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato-?O,O')hafnium(IV)] acetone solvate.

ABSTRACT: The binuclear title compound, [Hf(2)(C(5)HF(6)O(2))(6)(OH)(2)]·C(3)H(6)O, contains an Hf(IV) atom which is eight coordinated and surrounded by three chelating ?-diketonato 1,1,1,5,5,5-hexa-fluoro-acetyl-acetonate (hfaa) ligands and two bridging OH groups situated on a twofold rotation axis. The HfO(8) coordination polyhedron shows a slightly distorted Archimedean square anti-prismatic coordination with average Hf-O, C-O, C-C(Me) distances of 2.19?(2), 1.26?(2) and 1.49?(2)?Å, respectively, and an O-Hf-O bite angle of 75.3?(5)°. Weak O-H?O hydrogen bonding inter-actions are observed between one of the bridging hydr-oxy groups and the disordered solvent mol-ecule.

SUBMITTER: Viljoen JA 

PROVIDER: S-EPMC2971352 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature

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Di-μ-hydroxido-bis[tris(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato-κO,O')hafnium(IV)] acetone solvate.

Viljoen J Augustinus JA   Visser Hendrik G HG   Roodt Andreas A   Steyn Maryke M  

Acta crystallographica. Section E, Structure reports online 20091017 Pt 11

The binuclear title compound, [Hf(2)(C(5)HF(6)O(2))(6)(OH)(2)]·C(3)H(6)O, contains an Hf(IV) atom which is eight coordinated and surrounded by three chelating β-diketonato 1,1,1,5,5,5-hexa-fluoro-acetyl-acetonate (hfaa) ligands and two bridging OH groups situated on a twofold rotation axis. The HfO(8) coordination polyhedron shows a slightly distorted Archimedean square anti-prismatic coordination with average Hf-O, C-O, C-C(Me) distances of 2.19 (2), 1.26 (2) and 1.49 (2) Å, respectively, and a  ...[more]

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