Acta Cryst. (2011). E67, m717 [ doi:10.1107/S160053681101676X ]
Abstract: In the crystal structure of the title compound, [Zn(C7H7N2O4)2(H2O)2]·3H2O, the ZnII ion, located an inversion center, is N,O-chelated by two 5-carboxy-2-ethyl-1H-imidazole-4-carboxylate anions and further coordinated by two water molecules in a distorted octahedral geometry. The carboxy group links with the carboxylate group of the same ligand via an intramolecular O-HO hydrogen bond. An extensive intermolecular N-HO and O-HO hydrogen-bonded network exists in the crystal structure. One disordered lattice water molecule is half-occupied and is located close to an inversion center.
Online 7 May 2011
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