Synthesis and characterization of a new family of energetic salts based on guanidinium cation containing furoxanyl functionality

Abstract

A new family of energetic salts based on a new guanidinium cation containing furoxanyl functionality, 1-(3′-methylfuroxanyl)methyleneamino guanidinium cation, were synthesized and well characterized by IR and multinuclear NMR spectroscopy, elemental analysis as well as differential scanning calorimetry. The structures of salts 1, 4, 5 and 6 were confirmed by single-crystal X-ray diffraction. Most of the salts decompose at temperatures over 180 °C. Furthermore, except for salts 7 and 9, the remaining energetic salts exhibit low impact sensitivities (15–40 J), friction sensitivities (120–360 N), and are insensitive to electrostatics. The detonation pressure values calculated for these salts range from 19.3 to 27.5 GPa, and the detonation velocities range from 7515 to 8402 m s⁻¹. These results make some energetic salts potential candidates for energetic materials with good thermal stabilities and low sensitivities.