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 language | English |
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Article number | e202200285 |
Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
Volume | 649 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2 Jan 2023 |
Keywords
- Amino groups
- Detonation performance
- Energetic salts
- Heterocycles
- Low sensitivity