A facile strategy for synthesizing promising pyrazole-fused energetic compounds

Caijin Lei; Guangbin Cheng; Zhenxin Yi; Qinghua Zhang; Hongwei Yang

doi:10.1016/j.cej.2021.129190

A facile strategy for synthesizing promising pyrazole-fused energetic compounds

Caijin Lei, Guangbin Cheng, Zhenxin Yi, Qinghua Zhang, Hongwei Yang

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

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.

Original language	English
Article number	129190
Journal	Chemical Engineering Journal
Volume	416
DOIs	https://doi.org/10.1016/j.cej.2021.129190
State	Published - 15 Jul 2021
Externally published	Yes

Keywords

Heat-resistant explosive
Hydrazine-functionalized strategy
N-nitramine
Pyrazole-fused compounds

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10.1016/j.cej.2021.129190

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title = "A facile strategy for synthesizing promising pyrazole-fused energetic compounds",

abstract = "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.",

keywords = "Heat-resistant explosive, Hydrazine-functionalized strategy, N-nitramine, Pyrazole-fused compounds",

author = "Caijin Lei and Guangbin Cheng and Zhenxin Yi and Qinghua Zhang and Hongwei Yang",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = jul,

day = "15",

doi = "10.1016/j.cej.2021.129190",

language = "英语",

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T1 - A facile strategy for synthesizing promising pyrazole-fused energetic compounds

AU - Lei, Caijin

AU - Cheng, Guangbin

AU - Yi, Zhenxin

AU - Zhang, Qinghua

AU - Yang, Hongwei

PY - 2021/7/15

Y1 - 2021/7/15

N2 - 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.

AB - 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.

KW - Heat-resistant explosive

KW - Hydrazine-functionalized strategy

KW - N-nitramine

KW - Pyrazole-fused compounds

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DO - 10.1016/j.cej.2021.129190

M3 - 文章

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SN - 1385-8947

VL - 416

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

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ER -

A facile strategy for synthesizing promising pyrazole-fused energetic compounds

Abstract

Keywords

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