Acta Cryst. (2007). E63, m2007  [ doi:10.1107/S1600536807030747 ]

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

H.-Y. He, Y.-L. Zhou and J. Gao

Abstract: The title compound, [Cu₂(C₁₄H₈O₄)₂(C₁₀H₈N₂)₂]·4H₂O, contains a centrosymmetric binuclear copper(II) complex, with CuCu = 5.6865 (16) Å. The Cu atom displays a cis-CuN₂O₂ square-planar geometry, although two long (>2.6 Å) CuO contacts complete a distorted cis-CuN₂O₄ octahedron. The crystal packing is consolidated by O-HO hydrogen bonds to form infinite chains. One water molecule is disordered over two sites, with occupancy factors of ca 0.7 and 0.3.

Online 30 June 2007

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