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Acta Cryst. (2007). E63, m2966 [ doi:10.1107/S1600536807055377 ]
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3-malonato-iron(II)] monohydrate]Abstract: The title coordination polymer, [[Fe(C4H4O5)(H2O)2]·H2O]n, was obtained by the hydrothermal reaction of FeSO4 with malic acid in alkaline aqueous solution. Each FeII atom is coordinated by four O atoms from three malate ligands and two water molecules, and displays a distorted octahedral geometry. The polychelated malate ligands bridge Fe ions to form corrugated layers; these layers are further assembled by intermolecular O-H
O hydrogen-bonding interactions to form a three-dimensional supramolecular network, with channels running along the b axis in which the uncoordinated water molecules are located. The solvent water molecule is disordered over two positions, with occupancy ratios of 0.78/0.22.
Online 9 November 2007
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