title: 1-(1H-Imidazo[4,5-f][1,10]phenan-throlin-2-yl)naphthalen-2-ol.
abstract: In the title mol-ecule, C(23)H(14)N(4)O, the dihedral angle between the pyridine rings of the phenanthroline unit is 4.43 (8)° and the dihedral angle formed by the nine essentially planar [maximum deviation 0.0389 (16)Å] non-H atoms of the benzimidazole unit and the naphthalene ring system is 74.22 (5)°. In the crystal, mol-ecules are linked by inter-molecular N-H⋯N and O-H⋯N hydrogen bonds, forming a three-dimensional network.
authors.affiliation: College of Chemistry, Jilin Normal University, Siping 136000, People's Republic of China, and Key Laboratory of Preparation and Applications of Environmentally Friendly Materials (Jilin Normal University), Ministry of Education, People's Republic of China.
authors.forename: Xiu-Yan
authors.initials: XY
authors.lastname: Wang
authors.forename: Shuai
authors.initials: S
authors.lastname: Ma
authors.forename: Yu
authors.initials: Y
authors.lastname: He