Gowda B Thimme, Tokarčík Miroslav, Kožíšek Jozef, Shakuntala K, Fuess Hartmut
Acta Crystallogr Sect E Struct Rep Online. 2009 Dec 4;66(Pt 1):o51. doi: 10.1107/S1600536809051484.
In the title compound, C(10)H(7)Cl(2)NO(3), the asymmetric unit contains four independent mol-ecules, which are linked to each other by N-H⋯O hydrogen bonds. The mol-ecular structure is stabilized by a short intra-molecular O-H⋯O hydrogen bond within each maleamic acid unit. In the crystal, the mol-ecules are linked into networks through N-H⋯O hydrogen bonds and inter-molecular C-Cl⋯O=C contacts [Cl⋯O = 3.0897 (12) and 3.0797 (13) Å].