title: 1-(4-Methyl-phenyl-diazo-nium-yl)-2-naphtholate.
abstract: In the title compound, C(17)H(14)N(2)O, the dihedral angle between the benzene ring and naphthalene ring system is 11.0 (3)°. The azo group adopts an anti configuration and an intra-molecular N-H⋯O hydrogen bond exists. Mol-ecules are packed by π-π inter-actions between adjacent mol-ecule (closest approach between centroids of benzene and naphthalene rings of 3.501 Å).
authors.affiliation: Hubei Key Laboratory of Bioanalytic Techniques, Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, People's Republic of China.
authors.forename: Chuan-Ming
authors.initials: CM
authors.lastname: Jin
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.forename: Zhen-Xing
authors.initials: ZX
authors.lastname: Zhong
authors.forename: Ling-Yan
authors.initials: LY
authors.lastname: Wu