Acta Cryst. (2005). E61, m2477-m2479  [ doi:10.1107/S1600536805033842 ]

Poly[bis(4,4'-bipyridine)(₃-4,4'-dicarboxybiphenyl-3,3'-dicarboxylato)cobalt(II)]

X.-R. Hao, Z.-M. Su, Y.-H. Zhao, K.-Z. Shao and Y. Wang

Abstract: The title cobalt(II) coordination polymer, [Co(C₁₆H₈O₈)(C₁₀H₈N₂)₂]_n, was obtained by the reaction of Co(OAc)₂·4H₂O (OAc is acetate), 4,4'-bipyridine (4,4'-bpy) and biphenyl-3,4,3',4'-tetracarboxylic acid (H₄L) under hydrothermal conditions. Each Co^II atom lies at the centre of a distorted octahedron, coordinated by four O atoms from three H₂L^2- and two N atoms from two monodentate 4,4'-bpy ligands. Each H₂L^2- ligand coordinates to three Co^II centres through two carboxylate groups, one acting as a bridging bidentate group and the other in a chelating bidentate fashion. Two Co atoms, two H₂L^2- and four 4,4'-bpy ligands form a ring dimer node, and these nodes link into an extended broad chain along the c axis.

Online 5 November 2005

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