Acta Cryst. (2008). E64, m413  [ doi:10.1107/S1600536808002043 ]

catena-Poly[[[diaquairon(II)]--pyridine-2,5-dicarboxylato-[tetraaquairon(II)]--pyridine-2,5-dicarboxylato] tetrahydrate]

H.-Y. Xu, H.-L. Ma, M.-T. Xu, W.-X. Zhao and B.-G. Guo

Abstract: In the crystal structure of the title compound, {[Fe₂(C₇H₃NO₄)₂(H₂O)₆]·4H₂O}_n, there are two types of coordination for the Fe^II atoms. One Fe^II atom is in a distorted octahedral N₂O₄ environment, with two chelating rings from the pyridinedicarboxylate ligands and two O atoms from the water molecules, while the other is in a distorted octahedral O₆ environment with two O atoms from the pyridinedicarboxylate ligands and four O atoms from the water molecules. Both Fe^II atoms lie on crystallographic centers of symmetry. The complex possesses an infinite chain structure running along the [101] direction. These chains are interconnected by the uncoordinated water molecules through O-HO hydrogen bonds.

Online 25 January 2008

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