Synthesis and Properties of 3, 3'-Bis(2-nitroamino-1, 3, 4-oxadiazol-4-yl)-5, 5'-linked-1, 2, 4-oxadiazole and Its Energetic Salts

被引：0
|
作者：
Liao, Si-Cheng [1 ]
Deng, Mu-Cong [1 ]
Song, Si-Wei [1 ]
Jin, Yun-He [1 ]
Liu, Tian-Lin [1 ]
Zhang, Qing-Hua [1 ]
机构：
[1] Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang,621999, China
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2020年 / 28卷 / 07期
关键词：
A new energetic compound 3; 3'-bis(2-nitroamino-1; 3; 4-oxadiazol-4-yl)-5; 5'-linked-1; 2; 4-oxadiazole (BNOBO) was synthesized starting from glyoxime through a five-step reaction. Based on the acidity of BNOBO; three energetic salts (5-7) were obtained through the reactions between BNOBO and aqueous ammonia; hydrazine and hydroxylamine; respectively. The structures of as-synthesized compounds were characterized by single-crystal X-ray diffraction; IR; NMR and element analysis. The crystal of BNOBO ammonium salt was obtained through solvent evaporation method; the obtained results show that it belongs to a monoclinic system and C2/c space group with a=12.7490(8) nm; b=9.5957(7); nm; c=18.5965(12); V=2272.1(3) nm3 and Z=4. Their thermal stability; density; detonation properties and sensitivity were evaluated by TG/DSC analysis; densitometer; EXPLO5 v6.02 software and BAM sensitivity tester; respectively. Among these new energetic compounds; BNOBO possesses the highest measured density of 1.90 g•cm-3 and the highest onset decomposition temperature of 215℃. The calculated detonation velocity and pressure of BNOBO are as high as 8789 m•s-1 and 32.7 GPa; respectively. These new energetic compounds also exhibit relatively low mechanical sensitivities; in which energetic salt 5 display the low impact sensitivity of more than 20 J and friction sensitivity of 220 N. © 2020; Editorial Board of Chinese Journal of Energetic Materials. All right reserved;
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页码：632 / 637
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