title: 6-(2-Hydroxy-anilinomethyl-ene)-4-nitro-cyclo-hexa-2,4-dien-1-one.
abstract: The molecule of the title compound, C(13)H(10)N(2)O(4), is nearly planar with a dihedral angle between the two aromatic rings of 2.24 (9)°. The NH group forms an intramolecular hydrogen bond with the carbonyl O atom. The mol-ecules form dimers about inversion centers in the crystal structure via inter-molecular O-H⋯O hydrogen bonds.
authors.affiliation: Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Str. 29, 09596 Freiberg, Germany.
authors.forename: Uwe
authors.initials: U
authors.lastname: Böhme
authors.forename: Sabine
authors.initials: S
authors.lastname: Fels