title: 2-Amino-5-nitro-benzoic acid.
abstract: In the title compound, C(7)H(6)N(2)O(4), an intra-molecular N-H⋯O hydrogen bond generates an S(6) ring. In the crystal, inversion dimers linked by pairs of O-H⋯O hydrogen bonds generate R(2) (2)(8) loops. Inter-molecular N-H⋯O and C-H⋯O hydrogen bonds then link the dimers, generating R(3) (3)(16)R(2) (1)(6) motifs. The whole mol-ecule is essentially planar, with the greatest deviation from the mean plane being 0.065 (2) Å.
authors.forename: Hakkı Yasin
authors.initials: HY
authors.lastname: Odabaşoğlu
authors.forename: Orhan
authors.initials: O
authors.lastname: Büyükgüngör
authors.forename: Osman Ozan
authors.initials: OO
authors.lastname: Avinç
authors.forename: Mustafa
authors.initials: M
authors.lastname: Odabaşoğlu