Synthesis and Performance of [1, 2, 5] Oxadiazolo [3, 4‑b] Pyrazine‑5, 6‑(1H, 3H)‑dione and its Energetic Salts

被引：0
作者：
Xiao Y. [1 ]
Lei C. [1 ]
Yang H. [1 ]
Cheng G. [1 ]
机构：
[1] School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2022年 / 30卷 / 03期
关键词：
Crystal structure; Energetic salts; Synthesis; Thermal properties; 1; 2; 5]Oxadiazolo[3; 4‑b]pyrazine‑5; 6(1H; 3H)‑dione;
D O I：
10.11943/CJEM2021195
中图分类号：
学科分类号：
摘要：
[1, 2, 5] oxadiazole [3, 4‑b] pyrazine‑5, 6‑(1H, 3H)‑dione(1) was synthesized directly from 3, 4‑diaminofurazan and oxalic acid by one‑step amide condensation reaction, and the corresponding ionic salts 2-5 were further synthesized by reaction with base. The structures of compounds 1-5 were characterized by infrared spectrum (IR), 1H and 13C nuclear magnetic resonance(NMR). The structures of compounds 1 and 5 were further characterized by X‑ray single crystal diffraction. The thermal behaviors of compounds 1-5 were investigated based on differential scanning calorimetry (DSC) measurement. The thermal decomposition temperatures of compounds 1-5 ranged from 210.5 ℃ to 313.5 ℃. The physicochemical properties and detonation performances of compounds 1-5 were estimated by Gaussian 09 program and Explo 5(v. 6.01). The calculated detonation velocities of compounds 1-5 ranged from 7327 m·s-1 to 8555 m·s-1, and the detonation pressures ranged from 20.5 GPa to 30.6 GPa. The impact and friction sensitivities were determined by using BAM technology. The impact sensitivity of compound 1 is 27 J and the friction sensitivity is 280 N. The impact sensitivities of compounds 2-4 are all greater than 40 J and the friction sensitivities of 2-4 are 360 N. The impact sensitivity of sodium salt is 7 J and the friction sensitivity is 120 N. Among them, energetic salts 3 and 4 are expected to be new energetic materials with high energy and low sensitivity. © 2022, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.
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页码：236 / 241
页数：5
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