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Acta Cryst. (2012). E68, m1503-m1504
[ doi:10.1107/S1600536812045837 ]

[mu]-2,5-Dihydroxyterephthalato-bis[triaqua(1,10-phenanthroline)zinc] dihydroxyterephthalate

H. Liu, B. Liu, A.-P. Zhang and C.-B. Li

Abstract: In the title compound, [Zn2(C8H4O6)(C12H8N2)2(H2O)6](C8H4O6), the complete ions of both the binuclear dication and the dianion are generated by crystallographic inversion symmetry. The Zn atom is bonded to an N,N'-bidentate phenanthroline ligand, three water moleules and an O-monodenate 2,5-dihydroxyterephthalate dianion. In the resulting distorted octahedral ZnN2O4 coordination polyhedron, the water O atoms are in a mer orientation. Two intramolecular O-H...O hydrogen bonds occur in the bridging 2,5-dihydroxyterephthalate dianion within the complex cation and also in the free dianion. An intramolecular Ow-H...O (w = water) hydrogen bond also occurs within the dication. In the crystal, O-H...O hydrogen bonds link the component ions into a three-dimensional network.

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