Combination of 1,2,3-triazole and 1,2,4-triazole frameworks for new high-energy and low-sensitivity compounds

In this study, a series of energetic compounds based on C-C linked 1,2,3-triazole and 1,2,4-triazole were synthesized and characterized, i.e., 5-(5-nitro-2H-1,2,3-triazole-4-yl)-4H-1,2,4-triazole-3,4-diamine (compound 1), N(3-amino-5-(5-nitro-2H-1,2,3-triazole-4-yl)-4H-1,2,4-triazole-4-yl) nitramide (compound 4), and their energetic salts (compounds 2, 3, 5, and 6). The structures of compounds 1, 2, and 4 were determined by X-ray diffraction. All the new compounds feature acceptable thermal stability (T-dec = 185 -266 degrees C), with thermal decomposition temperature higher than that of RDX (T-dec = 204 degrees C) except for compound 6 (T-dec = 185 degrees C). Moreover, the detonation velocities of compounds 5 and 6 are 9200 m.s(-1) and 9024 m.s(-1), respectively, which are higher than that of RDX (D = 8795 m.s(-1)). Furthermore, the new compounds show low mechanical sensitivity (IS = 20 J, FS = 240 N) compared to RDX (IS = 7.4 J, FS = 120 N). These results will help to accelerate the development of new high-energy density materials.

Automated summary

A series of energetic compounds based on C-C linked 1,2,3-triazole and 1,2,4-triazole were synthesized and characterized in this study. These compounds exhibit high thermal stability, fast detonation velocities, and low mechanical sensitivity compared to RDX, showing potential for advancing the development of new high-energy density materials.