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A facile strategy for synthesizing promising pyrazole-fused energetic compounds
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2021-03-02 , DOI: 10.1016/j.cej.2021.129190
Caijin Lei , Guangbin Cheng , Zhenxin Yi , Qinghua Zhang , Hongwei Yang

A novel hydrazine-functionalized strategy is utilized for the synthesis of pyrazole-based energetic materials, giving rise to a new family of pyrazole-fused compounds and N-nitramine compounds with excellent properties. These new energetic materials are fully characterized by IR, 1H and 13C NMR and elemental analysis, as well as further confirmed by single crystal X-ray diffraction. All compounds exhibit high densities (1.816–1.882 g cm−3), good detonation properties (8323–8935 m s−1) and low sensitivities (IS > 15 J). Among these compounds, pyrazole-fused compound 5 features a striking thermal decomposition temperature of 302 °C and a better integrated energetic performance (D = 8935 m s−1, IS > 20 J, FS = 360 N) than that of RDX (D = 8795 m s -1, IS = 7.5 J, FS = 120 N). Furthermore, the results of detonation tests support the fact that 5 could be used as an applicable heat-resistant explosive and a replacer of HNS.



中文翻译:

合成有前途的吡唑稠合高能化合物的简便策略

一种新颖的肼功能化策略被用于合成吡唑基高能材料,从而产生了具有优异性能的新系列的吡唑稠合化合物和N-硝胺化合物。这些新的高能材料已通过IR,1 H和13 C NMR和元素分析充分表征,并通过单晶X射线衍射进一步证实。所有化合物均表现出高密度(1.816–1.882 g cm -3),良好的爆炸特性(8323–8935 m s -1)和低灵敏度(IS> 15 J)。在这些化合物中,与吡唑稠合的化合物5具有惊人的302°C的热分解温度和更好的综合能量性能(D = 8935 m s -1,IS> 20 J,FS = 360 N),而不是RDX(D = 8795 m s -1,IS = 7.5 J,FS = 120 N)。此外,爆炸测试的结果支持以下事实:5可用作适用的耐热炸药和HNS的替代品。

更新日期:2021-03-07
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