Acta Cryst. (2008). E64, m1556  [ doi:10.1107/S1600536808037288 ]

Bis(-biphenyl-2,2'-dicarboxylato)bis[(2,2'-bipyridine)cobalt(II)]

Z. An and X.-C. Niu

Abstract: In the title compound, [Co₂(C₁₄H₈O₄)₂(C₁₀H₈N₂)₂], the Co^II atom is coordinated by two N atoms from one 2,2'-bipyridine ligand and two O atoms from two biphenyl-2,2'-dicarboxylate (2,2'-dpa) ligands in a distorted planar geometry. Longer Co-O contacts [2.437 (3) and 2.552 (3) Å] are formed to the second O atom of each coordinated carboxylate group so that these groups approximate a bidentate coordination mode and the coordination geometry around Co^II approaches distorted octahedral. The 2,2'-dpa ligands bridge two Co^II atoms, forming a cyclic dinuclear complex around a centre of inversion.

Online 20 November 2008

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