Synthesis and Properties of Two 1，2，5-Oxadiazole based Energetic Salts with Nitrogen-Rich Fused Ring Skeleton

被引：0
|
作者：
Li T. [1 ]
Yi W.-B. [1 ]
Yu Q. [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 | 2024年 / 32卷 / 06期
基金：
中国国家自然科学基金;
关键词：
crystal structure; energetic salts; nitrogen-rich fused ring; oxadiazole; properties; pyrazine; triazole;
D O I：
10.11943/CJEM2024039
中图分类号：
学科分类号：
摘要：
Two nitrogen-rich energetic salts，5，5′- （hydrazine-1，2-diyl）bis（5，7-dihydro- [1，2，5]oxadiazolo[3，4-e][1，2，4]tri- azolo[4，3-a]pyrimidine-8（4H）-one）perchlorate（2）and 5，5′- （diazene-1，2-diyl）bis（[1，2，5]oxadiazolo[3，4-e][1，2，4]triazolo[4，3-a]pyrimidine-8（7H）-one）nitrate（3）were accomplished from the raw material of 5，6-diamino- [1，2，5]oxadiazolo[3，4-b]pyrazine（1）. Structure characterization of energetic ionic salts 2 and 3 were achieved through various techniques，including Nuclear Magnetic Resonance Spectroscopy （NMR），Fourier Transform infrared spectroscopy （FTIR），elemental analysis （EA）and X-ray single crystal diffraction（XRD）. Their thermal decomposition behaviors were investigated using differential scan - ning calorimetry（DSC）method，while their friction and impact sensitivities were identified according to BAM standard test meth - ods. Moreover，their detonation performances were predicted based on the combination of Isodesmic Reactions and EXPLO 5 software. The results prove that compounds 2 and 3 crystallize in the monoclinic system，belonging to space groups Pn and P21/n，respectively. The cationic parts of their crystal structures show good planarity and intensive hydrogen bonds in the crystal packing are observed. The thermal decomposition temperatures of compounds 2 and 3 are 154 ℃ and 130 ℃，respectively. Their theoretical detonation velocities are 7722 m·s-1 and 8008 m·s-1，while their theoretical detonation pressures are 26.3 GPa and 28.4 GPa，respectively. Their friction sensitivities are both 360 N，and impact sensitivities are greater than 40 J. Compounds 2 and 3 outperform traditional explosives TNT in terms of detonation performance，friction sensitivity，and impact sensitivity. © 2024 Institute of Chemical Materials, China Academy of Engineering Physics. All rights reserved.
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页码：615 / 622
页数：7
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