6-[(4-Hydroxyphenyl)diazenyl]-1,10-phenanthrolin-1-ium chloride monohydrate

Abstract

In the cation of the title mol­ecular salt, C18H13N4O+·Cl−·H2O, the dihedral angle between the mean planes of the 1,10-phenanthroline system and the phenol ring is 14.40 (19)°. The crystal packing is stabilized by O—H⋯O hydrogen bonds, weak N—H⋯Cl and O—H⋯Cl inter­molecular inter­actions and π—π stacking inter­actions [centroid–centroid distance = 3.6944 (13) and 3.9702 (12) Å]