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Acta Cryst. (2013). E69, m202-m203
[ doi:10.1107/S1600536813006430 ]

Poly[[diaquabis{[mu]-4-[6-(4-carboxyphenyl)-4,4'-bipyridin-2-yl]benzoato-[kappa]2O:N1'}copper(II)] dimethylformamide tetrasolvate]

Y. Sun, E. Song and D. Wang

Abstract: In the title compound, {[Cu(C24H15N2O4)2(H2O)2]·4C3H7NO}n, the CuII ion, lying on an inversion center, is six-coordinated by two N atoms from two 4-[6-(4-carboxyphenyl)-4,4'-bipyridin-2-yl]benzoate (L) ligands, two deprotonated carboxylate O atoms from two other symmetry-related L ligands and two water molecules in a slightly distorted octahedral geometry. The CuII atoms are linked by the bridging ligands into a layer parallel to (101). The presence of intralayer O-H...O hydrogen bonds and [pi]-[pi] interactions between the pyridine and benzene rings [centroid-centroid distances = 3.808 (2) and 3.927 (2) Å] stabilizes the layer. Further O-H...O hydrogen bonds link the layers and the dimethylformamide solvent molecules.

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