2-(4-Methyl­sulfanylphen­yl)-1H-benzimidazol-3-ium bromide

In the cation of the title compound, C(14)H(13)N(2)S(+)·Br(−), the essentially planar benzimidazole system (r.m.s. deviation = 0.0082 Å) is substituted with a 4-methyl­sulfanylphenyl ring. The dihedral angle between the benzimidazole system and the 4-methyl­sulfanylphenyl ring is 2.133 (2)°. The crystal structure is characterized by strong and highly directional inter­molecular N—H⋯Br hydrogen bonds involving the bromide ion. Moreover, C—H⋯S inter­actions result in chains of mol­ecules along the c axis. The supra­molecular assembly is further stabilized by π–π stacking inter­actions between the benzimidazole system and 4-methyl­sulfanylphenyl rings [centroid–centroid distance = 3.477 (4) Å].