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]