Abstract
AbstractFour novel cage compounds were designed by introducing –N(NO2)CH2–, –N(NO2)O–, –N(NO2)N(NO2)–, and –N=N– linkages into the RDX (hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine) skeleton. Their molecular geometry, electronic structure, heat of formation, and detonation properties were systematically studied using density functional theory (DFT). In addition, the most stable dimers of the four compounds were constructed to further investigate their stability based on intermolecular interactions. It is found that the unconventional CH⋯O interactions would be the dominant driving force when the title compounds form crystals. Compared with the traditional explosives, the compounds with higher detonation properties and lower impact sensitivity will be considered as promising candidates for high energy density compounds. Our results indicate that our innovative design strategy is extremely useful for developing novel energetic compounds.
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