Trinitromethyl Energetic Groups Enhance High Heats of Detonation
Peng Chen, Hui Dou, Jinya Zhang, Chunlin He, Siping Pang
Abstract
The introduction of groups with high enthalpies of formation can effectively improve the detonation performance of the compounds. A series of novel energetic compounds ( 10 – 13 ) with high enthalpies of formation, high density, and high nitrogen–oxygen content were designed and synthesized by combining gem -polynitromethyl, 1,2,4-oxadiazole, furoxan, and azo groups. All the new compounds were thoroughly characterized by IR, NMR, elemental analysis, and differential scanning calorimetry. Compounds 10 and 11 were also further characterized with single-crystal X-ray diffraction. Compound 11 has high density (1.93 g cm –3 ), high enthalpy of formation (993.5 kJ mol –1 ), high detonation velocity (9411 m s –1 ), and high heat of detonation (6889 kJ kg –1 ) and is a potentially excellent secondary explosive.