title: N-(3,5-Dichloro-phen-yl)maleamic acid.
abstract: 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].
authors.forename: B Thimme
authors.initials: BT
authors.lastname: Gowda
authors.forename: Miroslav
authors.initials: M
authors.lastname: Tokarčík
authors.forename: Jozef
authors.initials: J
authors.lastname: Kožíšek
authors.forename: K
authors.initials: K
authors.lastname: Shakuntala
authors.forename: Hartmut
authors.initials: H
authors.lastname: Fuess