Synthetic manifestation of trinitro-pyrazolo-2-1,2,3-triazoles (TNPT) as insensitive energetic materials

• Published in: Chemical communications (Cambridge, England) England), 2024-01, Vol.6 (7), p.827-83
• Main Authors: Balaraju, Muntha, Kommu, Nagarjuna, Vangara, Srinivas, Sahoo, Aswini K, Thaltiri, Vikranth, Sahoo, Akhila K
• Format: Article
• ISSN: 1359-7345; 1364-548X
• DOI: 10.1039/d3cc05116a

This study showcases the design and development of a facile method for synthesizing trinitro-pyrazolo-triazole (TNPT) and its derivatives. The synthesized compounds are analysed using multinuclear NMR [ 1 H, 13 C, and 15 N] and HRMS analyses. Furthermore, X-ray diffraction studies confirm the structure of some TNPT derivatives. Notably, compounds 8 , 9 , 11 , and 12 exhibit good thermal stability with a decomposition threshold above 250 °C, and show a high level of insensitivity towards impact and friction [impact sensitivity (IS) is more than 25 J and friction sensitivity (FS) is above 180 N]. Compound 12 , in particular, displays excellent performance characteristics [density 1.76 g cc −1 (at 298 K), a high detonation velocity ( D v = 8550 m s −1 ), and good thermal stability ( T d = 280 °C), with high insensitivity towards impact and friction (IS = 35 J; FS = 180 N)]. The Hirshfeld surface analysis study provides further insight into the sensitivity of the TNPT derivatives. This study showcases the design and development of a facile method for synthesizing trinitro-pyrazolo-triazole (TNPT) and its derivatives.