Novel Organic Compounds Containing Nitramine Groups Suitable as High‐Energy Cyclic Nitramine Compounds

Abstract

AbstractThis work introduces eight novel cyclic nitramine derivatives of energetic compounds as high performance energetic compounds. Assessments of physicothermal, detonation and combustion properties as well as sensitivities with respect to external stimuli impact, friction and shock are done for these compounds. The method of density functional theory (DFT) at B3LYP/6‐31G (d,p) as well as the best available predictive methods are used for prediction of 20 different parameters including crystal density, solid phase heat formation, Gibbs free energy of formation, activation energy, heat of sublimation, melting point, enthalpy of fusion, entropy of fusion, heat of combustion, heat of detonation, temperature of detonation, specific impulse, velocity of detonation, detonation pressure, Gurney velocity, power, brisance, heat sensitivity, impact sensitivity, friction sensitivity and shock sensitivity. These properties are compared with corresponding measured or calculated data of octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine (HMX) and 2,4,6,8‐tetranitro‐1H,5H‐2,4,6,8‐tetraazabicyclo [3.3.0] octane (BCHMX) as two high performance nitramines. Among the introduced cyclic nitramines, it shown that N,N‐bis(1,3,4,6‐tetranitrooctahydroimidazo[4, 5‐d]imidazol‐2‐yl) nitramide is a good candidate of high performance nitramine where its sensitivity with respect to impact, friction and shock is close to BCHMX.