title: 2-Amino-6-nitro-1H-benzoimidazol-3-ium chloride.
abstract: In the cation of the title compound, C(7)H(7)N(4)O(2) (+)·Cl(-), the benzimidazole ring system is planar with a maximum deviation of -0.019 (3) Å. In the crystal structure, C-H⋯Cl, N-H⋯Cl, and N-H⋯Cl inter-actions link the mol-ecules into a two-dimensional network. π-π contacts between benzimidazole rings [centroid-centroid distances = 3.928 (1) and 3.587 (1) Å] may further stabilize the structure.
authors.affiliation: Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Waihuan Xi Road No. 100, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangzhou 510006, People's Republic of China.
authors.forename: You-Sheng
authors.initials: YS
authors.lastname: Chen
authors.forename: Kun
authors.initials: K
authors.lastname: Zhang
authors.forename: Su-Qing
authors.initials: SQ
authors.lastname: Zhao