title: (E)-N'-[(2-Hydroxynaphthalen-1-yl)methylidene]nicotinohydrazide.
abstract: In the mol-ecule of the title compound, C(17)H(13)N(3)O(2), the naphthyl ring system and the pyridine ring form a dihedral angle of 12.2 (3)°. An intra-molecular O-H⋯N hydrogen bond generates a six-membered ring with an S(6) ring motif. This also contributes to the relative overall near planarity of the mol-ecule [r.m.s. deviation of all 22 non-H atoms = 0.107 (5) Å]. In the crystal, mol-ecules are linked through inter-molecular N-H⋯N hydrogen bonds, forming chains along the a axis.
authors.forename: Shi-Yong
authors.initials: SY
authors.lastname: Liu
authors.forename: Qin-Qin
authors.initials: QQ
authors.lastname: Guo
authors.forename: Yu-Mei
authors.initials: YM
authors.lastname: Hao
authors.forename: Xiao-Ling
authors.initials: XL
authors.lastname: Wang