Acta Cryst. (2011). E67, o2002 [ doi:10.1107/S1600536811025463 ]
Abstract: The title compound, C10H8N4O4·H2O, was obtained by the reaction of 5-hydroxy-2-nitrobenzaldehyde with cyanoacetohydrazide in methanol. The non-H atoms of the hydrazone molecule are approximately coplanar, with a mean deviation from the least-squares plane of 0.056 Å. In the crystal, molecules are linked by N-HO, O-HN and O-HO hydrogen bonds, generating a three-dimensional network.
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