(IUCr) Crystallography Journals Online

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Acta Cryst. (2010). E66, m594 [ doi:10.1107/S1600536810015369 ]

A tetranuclear cobalt(III) cluster with 2-(hydroxymethyl)pyridine ligands

F.-M. Wang, C.-S. Lu, Y.-Z. Li and Q.-J. Meng

Abstract: In the title compound, tetrakis[ [mu] ₃-(2-pyridyl)methanolato]tetrakis[bromido(methanol)cobalt(III)] tetrabromide 2-(hydroxymethyl)pyridine tetrasolvate dihydrate, [Co₄Br₄(C₆H₆NO)₄(CH₃OH)₄]Br₄·4C₆H₇NO₄·2H₂O, the cation comprises a [Co₄O₄] cubane-type core ( $\\overline4$ symmetry). The four Co^III ions and bridging O atoms from four (2-pyridyl)methanolate anions are located at alternating vertices of the cube, with bromide ions and methanol ligands on the exterior of the core, completing a distorted octahedral geometry. The structure is stablized by intermolecular O-HBr and O-HO interactions.

Online 30 April 2010