1-Methyl-2-({[(1-methyl-1H-benzimidazol-2-yl)methyl](phenyl)amino}methyl)1H-benzimidazol-3-ium picrate

In the title molecular salt, C24H24N5 +·C6H2N3O7 −, the dihedral angle between the benzimidazole rings of the cation is 5.041 (2)°. In the anion, the three nitro groups make dihedral angles of 2.468 (3), 12.795 (3) and 24.958 (4)° with respect to the central ring. In the crystal, weak aromatic π–π stacking [centroid–centroid distance = 3.599 (15) Å] consolidates the packing. In addition, an intramolecular N—H⋯N hydrogen bond is observed.