Acta Crystallographica Section E (Jul 2010)
N-(3,4-Dichlorophenyl)maleamic acid
Abstract
The asymmetric unit of the title compound, C10H7Cl2NO3, contains two unique molecules, both being stabilized by an intramolecular O—H...O hydrogen bond within their maleamic units. In the crystal structure, intermolecular N—H...O hydrogen bonds link the molecules into chains extending along [1overline{1}overline{1}] which are further assembled into sheets via short intermolecular C—Cl...O=C contacts [3.102 (2) and 3.044 (2) Å].