Yang Feng, Qin Yaqi, Wang Pengcheng, Lin Qiuhan, Xu Yuangang, Lu Ming
School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
Dalton Trans. 2022 Jul 5;51(26):10216-10220. doi: 10.1039/d2dt01173e.
High-efficiency explosives that combine high stability and excellent energy performance are one of the key directions of energetic materials research. In this study, a novel monocyclic hydroxytetrazole derivative (3) with high stability was prepared, and a series of insensitive energetic ionic salts were derived from it. Benefiting from their outstanding performance in terms of density, 3D hydrogen bonding and π-electron interactions, these salts are excellent in both detonation performance ( = 8709 to 9314 m s and = 29.9 to 35.6 GPa) and thermal stability ( = 193.0-232.2 °C). The hydrazine salt (2) exhibits high detonation properties ( = 9314 m s and = 35.6 GPa), due to its high density ( = 1.71 g cm) and high heat of formation (Δ = 563.2 kJ mol = 3.19 kJ g). In addition, the high thermal stability ( = 232.0 °C) and low mechanical sensitivity (IS = 30 J and FS = 360 N) of 2 are also unmatched by HMX and TKX-50. These improved properties demonstrate the great promise of 2 as an insensitive high-energy explosive.
兼具高稳定性和优异能量性能的高效炸药是含能材料研究的关键方向之一。本研究制备了一种具有高稳定性的新型单环羟基四唑衍生物（3），并由此衍生出一系列钝感含能离子盐。得益于它们在密度、三维氢键和π电子相互作用方面的出色表现，这些盐在爆轰性能（爆速(D = 8709)至(9314 m/s)，爆压(P = 29.9)至(35.6 GPa)）和热稳定性（分解温度(T_d = 193.0 - 232.2 °C)）方面都表现出色。肼盐（2）具有高爆轰性能（爆速(D = 9314 m/s)，爆压(P = 35.6 GPa)），这归因于其高密度（(\rho = 1.71 g/cm^3)）和高生成热（(\Delta H_f = 563.2 kJ/mol = 3.19 kJ/g)）。此外，2的高热稳定性（分解温度(T_d = 232.0 °C)）和低机械感度（撞击感度(IS = 30 J)，摩擦感度(FS = 360 N)）也是奥克托今（HMX）和1,1,1-三氨基-2,4,6-三硝基苯（TKX-50）所无法比拟的。这些改进的性能表明2作为一种钝感高能炸药具有巨大的潜力。
