title: N-(2,6-Dimethyl-phen-yl)maleamic acid.
abstract: The asymmetric unit of the title compound, C(12)H(13)NO(3), contains two independent mol-ecules. The conformation of the N-H bond and the C=O bond in the amide segment are anti to each other. The mol-ecular conformation of each mol-ecule is stabilized by an intra-molecular O-H⋯O hydrogen bond. In the crystal, mol-ecules are connected through intermolecular N-H⋯O hydrogen bonds. In addition, there is a carbon-yl-carbonyl dipolar inter-action with an O⋯C contact of 2.926 (3) 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