Synthesis and properties of novel energetic (cyano-NNO-azoxy)furazans

Three novel energetic furazans with a cyano-NNO-azoxy group were synthesized using cyanamide and 2,2,2-tri- fluoro-N-(4-nitrosofurazan-3-yl)acetamide as the starting compounds. (Cyano-NNO-azoxy)furazans obtained display high experimental enthalpies of formation (+742 to +1073 kcal kg⁻¹), good thermal stability (Tonset = 193–222 °C) and moderate mechanical sensitivity. These compounds may be of interest as energetic fillers in solid fuels for ramjet engines and in solid composite propellants.