Thermal Decomposition of Energetic Materials 77. Behavior of N-N Bridged Bifurazan Compounds on Slow and Fast Heating

Nine energetic furazan (1,2,5-oxadiazole) compounds were flash-heated by the use of T-jump/FTIR spectroscopy. Thermodynamically relatively stable gaseous products are formed, which reflect several patterns in the stoichiometry of the parent compound. The hydrazo-bridged furazans lose H2 to form the azo-bridged analog before the ring decomposes. The melting point and sublimation properties qualitatively relate to the crystal structure and hydrogen bonding potential in these compounds. The synthesis of dinitrohydrazofurazan is given for the first time.