Three energetic salts based on oxy-bridged bis(gem-dinitro) furazan: Syntheses, structures and thermal behaviors

摘要

Three high-energy salts (3, 4 and 5) based on oxy-bridged bis(gem-dinitro) furazan with potassium and nitrogen-rich cations were reported. Their structures were fully characterized and confirmed by NMR (H-1, C-13), IR spectroscopy, elemental analysis and single crystal X-ray diffraction. The thermal decomposition behaviors were studied by DSC and TG methods. And, the decomposition process of 5 was studied by the thermolysis in-situ rapid-scan FTIR. The non-isothermal kinetics parameters were obtained by Kissinger's and Ozawa's methods, respectively. The activation entropy (Delta S-not equal), activation enthalpy (Delta H-not equal), activation Gibbs free energy (Delta G(not equal)) and the critical temperature of thermal explosion were calculated. (C) 2014 Elsevier B.V. All rights reserved.