Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 5 (May 2013)

metal-organic compounds

Acta Cryst. (2013). E69, m290-m291    [ doi:10.1107/S1600536813010908 ]


M. Sertçelik, N. Çaylak Delibas, H. Necefoglu and T. Hökelek

Abstract: The asymmetric unit of the centrosymmetric dinuclear title compound, [Cu2(C8H5O3)4(C6H6N2O)4], contains one half of the complex mol­ecule. The CuII atoms are bridged by the carboxyl­ate groups of two 4-formyl­benzoate (FOB) anions. Besides the two bridging FOB anions, one additional chelating FOB anion and two isonicotinamide (INA) ligands complete the distorted CuN2O4 octa­hedral coordination of each Cu2+ cation. Within the asymmetric unit, the benzene and pyridine rings are oriented at dihedral angles of 25.1 (3) and 12.6 (3)°, respectively. In the crystal, N-H...O and C-H...O hydrogen bonds link the mol­ecules into a three-dimensional network. [pi]-[pi] contacts between the pyridine rings [shortest centroid-centroid distance = 3.821 (3) Å] may further stabilize the crystal structure. One of the formyl groups of the two FOB anions is disordered over two sets of sites with an occupancy ratio of 0.65:0.35.

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