Amino-group excites vitality in nitrogen-rich energetic salts of triazolium

Junyan Li, Jinting Wu*, Tingxing Zhao, Hongbo Li*, Jianguo Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Incorporating amino groups is an efficient strategy for the tuning properties of energetic materials. However, there is no unanimous conclusion on the effect of the number of amino groups (−NH2) on performance. Therefore, in this study, different number of −NH2 of four energetic salts of triazolium based on oxadiazole and triazole were designed and synthesized. The structure features of energetic salts 4–6 were then investigated by single-crystal X-ray diffractions and Hirshfeld surfaces analyses. Afterward, the effects of −NH2 were evaluated by thermal stability, impact sensitivity and detonation performance. All these energetic salts were insensitive to mechanical stimulation (IS >40 J), but the thermal decomposition temperatures of energetic salt 5–7 with −NH2 are 24 °C to 54 °C higher than energetic salt 4 without −NH2. Moreover, energetic salt 5 with one −NH2 has the highest theoretical detonation properties compared to those without −NH2 (4) and with two −NH2 (6, 7). These observations revealed that appropriate amount of −NH2 can lead to desirable increase in the energetic properties, and this work can offer guidance for the design and synthesis of further energetic salts.

Original languageEnglish
Article numbere202200285
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume649
Issue number1
DOIs
Publication statusPublished - 2 Jan 2023

Keywords

  • Amino groups
  • Detonation performance
  • Energetic salts
  • Heterocycles
  • Low sensitivity

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