Synthesis, Structure And Properties Of FOX - 7 Organic Amine Complexes

1,1-diamino-2,2-dinitroethylene(FOX-7) is a hot energy material, it has structural stability, higher insensitivity, nice heat resistance as well as good safety and compatibility performance. In the past years, a lot of work have been done with performances and properties of FOX-7,many FOX-7derivatives were synthesized by its reaction activity.This paper interacted FOX-7with ammonia, ethylenediamine with cadmium salt and zinc salt respectively, synthesized Cd(NH3)4(FOX-7)2,Zn(NH3)2(FOX-7)2,[Zn(en)3](FOX-7)2. Cd(NH3)4(FOX-7)2:monoclinic crystal; space group P21/n; Zn(NH3)2(FOX-7)2:monoclinic crystal; space group C2/c;[Zn(en)3](FOX-7)2:monoclinic crystal; space group C2/c;All coordination complexes were characterized by Melting Point Apparatus and Elemental Analysis. Three kinds of monocrystal were obtained, at the same time, the structure of Cd(NH3)4(FOX-7)2,Zn(NH3)2(FOX-7)2,[Zn(en)3](FOX-7)2were determined by X-ray diffractometer. The data of structures was analyzed by SHELXL-97software to get molecular structures and their packing diagram, which used to analyze the properties of structure, situation of crystal packing and the interaction between intermolecular.The three compounds’thermal behaviors were studyed by DSC methods and TG/DTG methods under non-isothermal conditions. Thermal decomposition dynamic equation of Cd(NH3)4(FOX-7)2,Zn(NH3)2(FOX-7)2,[Zn(en)3](FOX-7)2were got under the non-isothermal condition by adopting three methods,these methods are the Kissinger, Ozawa and integral.Further, at peak temperature we got the thermo-kinetics parameters (ΔH≠,ΔS≠,ΔG≠), explosive critical temperature(Tb) and thermal ignition temperature(7xrr). The three new compounds’ Cp equations were obtained as well as the adiabatic time-to-explosion of Cd(NH3)4(FOX-7)2,Zn(NH3)2(FOX-7)2,[Zn(en)3](FOX-7)2were ranked. At the same time, the experiments of impact sensitivity were performed. The impact sensitivity of Cd(NH3)4(FOX-7)2,Zn(NH3)2(FOX-7)2and [Zn(en)3](FOX-7)2are about8J,9J and20J, respectively.