Acta Cryst. (2008). E64, m1108-m1109  [ doi:10.1107/S1600536808024215 ]

Hexakis(1H-imidazole-N³)nickel(II) triaquatris(1H-imidazole-N³)nickel(II) bis(naphthalene-1,4-dicarboxylate)

J.-H. Li, J.-J. Nie and D.-J. Xu

Abstract: The crystal structure of the title compound, [Ni(C₃H₄N₂)₆][Ni(C₃H₄N₂)₃(H₂O)₃](C₁₂H₆O₄)₂, contains uncoordinated naphthalenedicarboxylate dianions and two kinds of Ni^II complex cations, both assuming distorted octahedral geometries. One Ni^II ion is located on an inversion center and is coordinated by six imidazole molecules, while the other Ni^II ion is located on a twofold rotation axis and is coordinated by three water molecules and three imidazole molecules in a mer-NiN₃O₃ arrangement. The naphthalenedicarboxylate dianion links both Ni^II complex cations via O-HO and N-HO hydrogen bonding, but no - stacking is observed between aromatic rings in the crystal structure. One imidazole ligand is equally disordered over two sites about a twofold rotation axis; one N atom and one water O atom have site symmetry 2.

Online 6 August 2008

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