N-(2-Chloro-4-nitrophenyl)maleamic acid monohydrate

Abstract

The title compound, C10H7ClN2O5·H2O, crystallizes with a half-molecule each of N-(2-chloro-4-nitrophenyl)maleamic acid (located on a mirror plane) and water (located on a twofold rotation axis) in the asymmetric unit. The main molecule is planar by symmetry and its conformation is stabilized by an intramolecular O—H...O hydrogen bond. In the crystal, N—H...O and O—H...O hydrogen bonds link the molecules into a three-dimensional network.