4,4′-Dimethyl-1,1′-bi(1,2,3-triazole): exploring new insensitive energy source materials†

Abstract

The safety and thermal stability of energetic materials have attracted increasing attention, while the development of simpler synthesis routes is also one of the main goals pursued by researchers in the field of energetic materials. To meet these needs, a novel energy-containing compound 4,4′-dimethyl-1,1′-bi(1,2,3-triazole) (2) with low mechanical sensitivity was synthesized from pyruvaldehyde and hydrazine hydrate in this work, which provided a new way of constructing long nitrogen compounds. The structure of energetic compound 2 was characterized by NMR (¹H and ¹³C), infrared spectroscopy (IR) and X-ray crystallography. The results showed that 2 is mechanically insensitive (IS = 30 J, FS = 160 N) with detonation properties (D = 6844 m s⁻¹, P = 16 GPa).