Acta Cryst. (2006). E62, m1722-m1724  [ doi:10.1107/S1600536806023907 ]

Poly[[[(2,2'-bipyridine-²N,N')cobalt(II)]-₃-5-hydroxyisophthalato-⁴O,O':O'':O'''] dihydrate]

X. Zhuo, Z.-R. Pan, Z.-W. Wang, Y.-Z. Li and H.-G. Zheng

Abstract: In the title compound, {[Co(C₈H₄O₅)(C₁₀H₈N₂)]·2H₂O]}_n or {[Co(OH-BDC)(2,2'-bipy)]·2H₂O]}_n (where OH-H₂BDC is 5-hydroxyisophthalic acid and 2,2'-bipy is 2,2'-bipyridine), the Co atoms are chelated by two N atoms from the 2,2'-bipy ligand and by four O atoms from OH-BDC ligands in a highly distorted octahedral geometry. OH-BDC acts as a tetradentate ligand, with one carboxylate group chelating one Co atom and the other binding in a monodentate fashion to two other Co atoms to form a one-dimensional zigzag chain. In the crystal structure, one of the solvent water molecules lies on a crystallographic twofold axis. The one-dimensional molecular chains are assembled into a two-dimensional network via O-HO hydrogen-bonding interactions, while - stacking interactions generate a three-dimensional open framework between the two-dimensional networks.

Online 30 June 2006

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