Synthesis of high-density 1,2,5-oxadiazole units shows enhanced thermal stability and detonation properties.
The design and synthesis of advanced energetic non-hydrogen 1,2,5-oxadiazole assemblies were realized. All target azo-1,2,5-oxadiazole assemblies have high densities (1.89-1.90 g cm-3), good thermal stabilities (180-181 °C), high enthalpies of formation (933-955 kJ mol-1), and positive oxygen balance with respect to CO (+7.5%). As a result, these compounds exhibit high detonation velocities (9.0 km s-1), high detonation pressures (38 GPa), and excellent heats of detonation (5.82-5.85 kJ g-1), unveiling new opportunities in the search for next-generation functional organic materials.
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Larin et al. (2025) studied this question.
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