1-Benz­yl-3-(2-pheneth­yl)benzimidazolium bromide monohydrate

The title compound, C₂₂H₂₀N₂⁺·Br⁻·H₂O, was synthesized from 1-benzyl­benzimidazole and 2-bromo­ethyl­benzene in dimethyl­formamide. The dihedral angle between the two phen­yl rings is 70.6 (1)°. These phen­yl rings make dihedral angles of 52.99 (9) and 83.03 (8)° with the benzimidazole ring system. The crystal structure is stabilized by inter­molecular C—H...Br and O—H...Br hydrogen-bond inter­actions.