Acta Cryst. (2004). E60, m785-m787  [ doi:10.1107/S160053680401133X ]

-Acetato-di--hydroxo-bis{acetato[bis(2-pyridyl)amine]cobalt(III)} acetate tetrahydrate: a novel mixed-bridged dinuclear Co^III complex with bis(2-pyridyl)amine as terminal ligands

M. Du and X.-J. Zhao

Abstract: The complex cation of the title compound, [Co₂(C₂H₃O₂)₃(OH)₂(C₁₀H₉N₃)₂](C₂H₃O₂)·4H₂O, has a [Co₂(-OH)₂(-OAc)(OAc)₂(bpa)₂]⁺ dimeric core [bpa is bis(2-pyridyl)amine and OAc is acetate], in which two Co^III centers are linked by two OH^- and one OAc^- bridges with a CoCo separation of 2.8276 (10) Å. Each Co^III ion has an approximate octahedral geometry, coordinated by two pyridyl N atoms of the terminal bpa ligand, and four O-atom donors derived from two OH^- bridges, one OAc^- bridge and a monodentate coordinated OAc^- anion. Intramolecular and intermolecular hydrogen-bonding interactions stabilize this structure.

Online 15 May 2004

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