title: 2,2'-(Imino-dimethyl-ene)dibenz-imid-azol-ium bis-(perchlorate) methanol solvate.
abstract: In the title compound, C(16)H(17)N(5) (2+)·2ClO(4) (-)·CH(3)OH, the dihedral angle between the two benzimidazolium ring systems is 34.6 (1)°. The anions and solvent mol-ecules are linked to the cation by N-H⋯O hydrogen bonds. In the crystal structure, the combination of N-H⋯O and O-H⋯O hydrogen bonds results in two-dimensional layers running parallel to the (010) plane; these are in turn linked by π-π inter-actions, forming a three-dimensional network.
authors.affiliation: Key Laboratory of Pesticides and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China.
authors.forename: Chun-Shan
authors.initials: CS
authors.lastname: Zhou
authors.forename: Xue-Ying
authors.initials: XY
authors.lastname: Huang
authors.forename: Xiang-Gao
authors.initials: XG
authors.lastname: Meng