Nonisothermal decomposition kinetics, specific heat capacity, and adiabatic time-to-explosion of Zn(NH3)2(FOX-7)2

A new energetic zinc-FOX-7 complex, Zn(NH3)(2)(FOX-7)(2) (FOX-7 = 1,1-diamino-2,2-dinitroethylene), was first synthesized. Thermal decomposition behavior and nonisothermal decomposition kinetics of Zn(NH3)(2)(FOX-7)(2) were studied with DSC and TG/DTG methods. The kinetic equation obtained is . The self-accelerating decomposition temperature (T (SADT)) and critical temperature of thermal explosion (T (b)) are 183.2 and 195.8 A degrees C, respectively. The specific-heat capacity of Zn(NH3)(2)(FOX-7)(2) was determined with a micro-DSC method, and the molar-heat capacity is 454.6 J mol(-1) K-1 at 298.15 K. Adiabatic time-to-explosion was also estimated to be about 20 s. The thermal stability of Zn(NH3)(2)(FOX-7)(2) is good and higher than that of analogous Cu(NH3)(2)(FOX-7)(2).