2-Trifluoro-methyl-1H-benzimidazol-3-ium perchlorate.
In the title salt, C(8)H(6)F(3)N(2) (+)·ClO(4) (-), the atoms of the benzimidazole ring (including H atoms) are nearly coplanar (r.m.s. deviation of the fitted atoms = 0.0122 Å) and the triflouromethyl group lies out of this plane. The perchlorate anion adopts a distorted tetra-hedral conformation with the Cl-O bond distances ranging from 1.412 (3) to 1.439 (2) Å. The benzimidazolium cations are linked to adjacent anions by inter-molecular N-H⋯O hydrogen bonds, forming chains.
College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096,  People's Republic of China.
Ming-Liang
ML
Liu