Comparative study on 1,2,3-triazole based azo- and triazene-bridged high-nitrogen energetic materials

• Published in: Energetic materials frontiers Vol. 2; no. 2; pp. 125 - 130
• Main Authors: Feng, Shang-biao, Li, Feng-sheng, Zhao, Xin-yuan, Qian, Ya-dong, Fei, Teng, Yin, Ping, Pang, Si-ping
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.06.2021; KeAi Communications Co. Ltd
• Subjects: 1,2,3-Triazole; Comparative study; Detonation performance; Energetic compounds; Energetic compounds; 1,2,3-Triazole; Detonation performance; Comparative study
• ISSN: 2666-6472; 2666-6472
• DOI: 10.1016/j.enmf.2021.03.006

Two different 1,2,3-triazole based energetic compounds, featuring with azo (-NN-) and triazene (-NN–NH-) bridge were investigated. All newly synthesized compounds were fully characterized by multinuclear NMR spectroscopy, infrared spectroscopy, elemental analysis, and single-crystal X-ray diffraction. Comparative study indicated that both of them are insensitive to the external mechanic stimuli, however, the other key energetic properties of azo compound (E)-1,2-bis(2-methyl-5-nitro-2H-1,2,3-triazol-4-yl)diazene(2), e.g., density, detonation velocity and pressure are superior to those of triazene compound (E)-5,5'-(triaz-1-ene-1,3-diyl)bis(2-methyl-4-nitro-2H-1,2,3-triazole) (1). This work gives a revelation on the two different types nitrogen-bridged energetic materials, especially in rarely triazene-bridge type explosives. A comparative study on 1,2,3-triazole based azo and triazene-bridged high-nitrogen energetic materials is described. The key properties indicate that azo functionalized compound shows more favorable performance in friction sensitivity, thermal stability, density and detonation detonation performance. [Display omitted]