Energetic furazan-triazoles with high thermal stability and low sensitivity: Facile synthesis, crystal structures and energetic properties
CrystEngComm, ISSN: 1466-8033, Vol: 21, Issue: 40, Page: 6093-6099
2019
- 19Citations
- 2Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
Crystal stacking has significant implications for the properties of energetic materials, especially molecular stability. A series of furazan-triazole energetic compounds with diverse crystal stacking forms were synthesized through a facile procedure. All new compounds were characterized by NMR spectroscopy, IR spectroscopy, elemental analysis, and differential scanning calorimetry (DSC). Single crystal X-ray diffraction analysis indicated that compounds 2a and 2c show face-to-face stacking, while compounds 3 and 3a exhibit wave-like stacking as a result of their planar furazan-triazole skeleton. Furthermore, on the basis of single-crystal data, noncovalent interactions were analyzed to comprehensively study their structure-property relationships. Compound 2b is highly stable, exhibiting a decomposition temperature of 324 °C, an impact sensitivity of >40 J, and a friction sensitivity of >360 J, thereby demonstrating its potential application as a heat-resistant and insensitive explosive. Meanwhile, 3b with its superior detonation velocity (9114 m s) and pressure (35.8 GPa) and favorable stability (T = 226 °C, IS = 20 J, FS = 280 N), exhibits a performance superior to that of RDX. This work provides insights into the combination of molecular design and crystal stacking for generating new energetic materials.
Bibliographic Details
Royal Society of Chemistry (RSC)
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