Crystal structure of bis(1-benzyl-1H-1,2,4-triazole) perchloric acid monosolvate

Abstract

The title compound, 2C9H9N3·HClO4, was prepared by reaction of 1-benzyl-1H-1,2,4-triazole and HClO4 in ethanol at room temperature. The asymmetric unit consists of two molecules of 1-benzyl-1H-1,2,4-triazole and one of HClO4 molecule. The benzene and triazole rings make dihedral angles of 85.45(8) and 84.76(8)° in the two molecules. The H-atom position of the perchloric acid molecule is split over two O atoms (real peaks on difference map), with site-occupation factors of 0.5. These H atoms form two classical hydrogen bonds [2.546(5) and 2.620(4)Å] with the same N atoms in both molecules. Five intermolecular non-classical C-H⋯O interactions, with C⋯O distances in the range 3.147(5)-3.483(5)Å, are found in the crystal structure.