title: 4-Hy-droxy-N'-(3-nitro-benzyl-idene)benzohydrazide.
abstract: The title compound, C(14)H(11)N(3)O(4), was obtained by a condensation reaction between 3-nitro-benzaldehyde and 4-hy-droxy-benzohydrazide. The whole mol-ecule is approximately planar, with a dihedral angle of 9.2 (3)° between the benzene rings. The mol-ecule displays an E conformation about the C=N bond. In the crystal, mol-ecules are linked via N-H⋯O, O-H⋯O and O-H⋯N hydrogen bonds, generating sheets parallel to the bc plane.
authors.affiliation: College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006,  People's Republic of China.
authors.forename: Jin-Long
authors.initials: JL
authors.lastname: Hou