title: N'-Diphenyl-methyl-ene-2-hydroxy-benzohydrazide.
abstract: The title compound, C(20)H(16)N(2)O(2), was synthesized by the reaction of 2-hydroxy-benzohydrazide with diphenyl-methanone. The dihedral angle between the phenyl rings is 76.28 (11)°. The amino H atom is involved in an intra-molecular N-H⋯O hydrogen bond. In the crystal structure, the hydr-oxy groups and carbonyl O atoms form inter-molecular O-H⋯O hydrogen bonds, which link the mol-ecules into chains running along the b axis.
authors.forename: Ning-Ning
authors.initials: NN
authors.lastname: Ji
authors.forename: Zhi-Qiang
authors.initials: ZQ
authors.lastname: Shi