title: (E)-2-Hydroxy-naphthalene-1-carb-al-de-hyde semicarbazone.
abstract: The title compound, C(12)H(11)N(3)O(2), adopts an E or trans configuration with respect to the C=N bond. There is an intra-molecular O-H⋯N hydrogen bond involving the hydroxyl H atom and an N atom of the hydrazine group. In the crystal structure, mol-ecules are connected via N-H⋯O hydrogen bonds, forming a three-dimensional network.
authors.forename: Hua-Jie
authors.initials: HJ
authors.lastname: Xu
authors.forename: Na-Na
authors.initials: NN
authors.lastname: Du
authors.forename: Xue-Yue
authors.initials: XY
authors.lastname: Jiang
authors.forename: Liang-Quan
authors.initials: LQ
authors.lastname: Sheng
authors.forename: Yu-Peng
authors.initials: YP
authors.lastname: Tian