Crystal structure and Hirshfeld surface analysis and of 2-ammoniumylmeth-yl-1H-benzimidazol-3-ium chloride monohydrate.

The asymmetric unit of the title compound, C8H11N3 2+·2Cl-·H2O, contains three organic cations, six chloride anions and three water mol-ecules of crystallization, which are connected by extensive hydrogen-bonding inter-actions into a three-dimensional supra-molecular architecture. Hirshfeld surface analysis and two-dimensional fingerprint plots indicate that the most important contributions to the crystal packing are from H⋯H (37.4%), Cl⋯H/H⋯Cl (35.5%), C⋯H/H⋯C (9.5%) and C⋯C (6.9%) inter-actions.