title: 3-Allyl-1-(2-cyano-benz-yl)-2-methyl-benzimidazol-3-ium bromide.
abstract: In the title compound, C(19)H(18)N(3) (+)·Br(-), both the allyl and cyano-phenyl groups are approximately perpendicular to the central benzimidazole unit, making dihedral angles of 89.7 (2) and 85.09 (13)°, respectively. The crystal packing is dominated by C-H⋯Br inter-actions, with each anion inter-acting with five neighboring cations.
authors.affiliation: Ordered Matter Science Research Center, Southeast University, Nanjing 210096, People's Republic of China.
authors.forename: Xiong-Bin
authors.initials: XB
authors.lastname: Xu
authors.forename: Qiong
authors.initials: Q
authors.lastname: Ye