Acta Cryst. (2009). E65, m562-m563  [ doi:10.1107/S1600536809014639 ]

-Biphenyl-3,3',4,4'-tetracarboxylato-²O³:O^3'-bis[triaqua(2,2'-bipyridyl-²N,N')nickel(II)] hexahydrate

D. Zhou, M. Shao, X. He, Y. Zhao and S. Zhu

Abstract: The asymmetric unit of the title complex, [Ni₂(C₁₆H₆O₈)(C₁₀H₈N₂)₂(H₂O)₆]·6H₂O, contains one Ni^II atom, one 2,2'-bipyridine ligand, three coordinated water molecules, one-half of a fully deprotonated biphenyl-3,3',4,4'-tetracarboxylate anion and three lattice water molecules. The Ni^II atom displays a distorted NiN₂O₄ octahedral coordination formed by one carboxylate O atom, three water O atoms and two N atoms of the chelating ligand. The complete biphenyl-3,3',4,4'-tetracarboxylate ligand displays inversion symmetry and links two symmetry-related Ni^II atoms into a binuclear complex. Neighbouring complex molecules are linked through O-HO hydrogen bonds into a three-dimensional structure. Additional O-HO hydrogen bonds between the lattice water molecules help to consolidate the crystal packing.

Online 25 April 2009

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