3,3′-[1,4-Phenyl­enebis(methyl­ene)]­bis­(1-propyl­benzimidazolium) dichloride dihydrate

The asymmetric unit of the title compound, C₂₈H₃₂N₄²⁺·2Cl⁻·2H₂O, contains half of a 3,3′-[1,4-phenyl­enebis(methyl­ene)]bis­(1-propyl­benzimidazolium) cation, one chloride anion and one water mol­ecule. The complete cation is generated by a crystallographic inversion center. The central benzene ring forms a dihedral angle of 66.06 (11)° with its adjacent benzimidazolium ring system. In the crystal, the cations, anions and water mol­ecules are linked by O—H...Cl, C—H...O and C—H...Cl hydrogen bonds into a three-dimensional network. The crystal packing is further stabilized by π–π inter­actions, with centroid–centroid distances of 3.5561 (15) and 3.6708 (15) Å.