3,3′-[1,2-Phenylenebis(methylene)]bis(1-heptylbenzimidazolium) dibromide monohydrate

In the title salt, C36H48N42+center dot 2Br(-)center dot H2O, the central benzene ring makes dihedral angles of 84.77 (9) and 69.92 (7)degrees with the adjacent imidazole rings. In the crystal, one of the heptyl groups is disordered over two sets of sites with an occupancy ratio of 0.474(5):0.526 (5). In the crystal, the cations, anions and water molecules are connected via intermolecular O-H center dot center dot center dot Br, C-H center dot center dot center dot Br and C-H center dot center dot center dot O hydrogen bonds, forming a three-dimensional network.