Synthesis of 5-(1H-pyrazol-1-yl)-2H-tetrazole-derived energetic salts with high thermal stability and low sensitivity

Yue Zheng; Xia Zhao; Xiujuan Qi; Kangcai Wang; Tianlin Liu

Energetic Materials Frontiers (Sep 2020)

Synthesis of 5-(1H-pyrazol-1-yl)-2H-tetrazole-derived energetic salts with high thermal stability and low sensitivity

Yue Zheng,
Xia Zhao,
Xiujuan Qi,
Kangcai Wang,
Tianlin Liu

Affiliations

Yue Zheng: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, China; School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621900, China
Xia Zhao: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, China; School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621900, China
Xiujuan Qi: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, China; School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621900, China
Kangcai Wang: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, China; Corresponding author.
Tianlin Liu: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, China; Corresponding author.

Journal volume & issue: Vol. 1, no. 2
pp. 83 – 89

Abstract

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In this study, a novel energetic compound 3-nitro-1-(2H-tetrazol-5-yl)-1H-pyrazole-4-carboxylic acid (1) and a series of corresponding energetic salts (2–4) were designed and synthesized. Their chemical structures were determined through NMR spectra, elemental analysis, FT-IR, and single crystal X-ray diffraction. All of these energetic compounds displayed low sensitivity to impact (IS > 40 J) and friction (FS > 240 N) and acceptable detonation properties. Compound 1–3 showed high thermal stability, with decomposition temperatures higher than 300 °C. In addition, the structure–property relationship of these compounds was elucidated by crystal stacking analyses combined with energetic performance parameters. In this way, a new approach for the development of novel energetic materials can be provided given the high performance of these energetic compounds.

Published in Energetic Materials Frontiers

ISSN: 2666-6472 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Chemical technology
Website: https://www.keaipublishing.com/en/journals/energetic-materials-frontiers/

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