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Acta Cryst. (2005). E61, m1514-m1516  [ doi:10.1107/S1600536805021380 ]

Bis(imidazolium) diaquabis(pyridine-2,5-dicarboxylato-[kappa]2N,O)cobaltate(II) tetrahydrate

Q.-J. Deng, Z.-T. Liu and M.-H. Zeng

Abstract: The title complex, (C3H5N2)2[Co(C7H3NO4)2(H2O)2]·4H2O, was prepared by a hydrothermal reaction. Each CoII atom is located on a crystallographic inversion centre and displays a distorted octahedral coordination geometry. The face-to-face distance of 3.529 (7) Å between partially overlapped parallel pyridine rings reflects a [pi]-[pi] stacking interaction between neighbouring CoII complex molecules. A network of O-H...O and O-H...N hydrogen bonds helps to stabilize the crystal packing.

Online 9 July 2005

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