title: 1-(2-Cyano-ethyl)-2-(2-pyrid-yl)-1H,3H-benzimidazol-3-ium perchlorate.
abstract: The title compound, C(15)H(13)N(4) (+)·ClO(4) (-), comprises a nonplanar 1-(2-cyano-ethyl)-2-(2-pyrid-yl)-1H,3H-benzimidazol-3-ium cation [dihedral angle between the imidazole and pyridine rings = 22.5 (8)°] and a perchlorate anion. The cation is formed by protonation of the N atom of the benzimidazole ring. A charged N-H⋯O hydrogen bond connects the anion and cation, and inter-molecular C-H⋯O and C-H⋯N inter-actions contribute to the crystal packing.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Xiaoliang
authors.initials: X
authors.lastname: Tang
authors.forename: Jiayu
authors.initials: J
authors.lastname: Chen
authors.forename: Daxiang
authors.initials: D
authors.lastname: Wu
authors.forename: Weisheng
authors.initials: W
authors.lastname: Liu