Synthesis, Structure Of Bistetrazole-Metal Complex And Their Effects Of Thermal Decomposition Of AP

Tetrazole is the unsaturated energetic heterocyclic compound with high nitrogen content and good stability leading to the high energy yet low sensitivity materials. Additionally, the four nitrogen atoms in the tetrazole provide the coordination points to form the complexes, which prossess variable coordination modes. Therefore, the tetrazole is the important ligand from the aspect of coordination chemistry.In this thesis, we chose the bis-(tetrazolyl)amine and the 5,5'-azoetrazoeate as the ligands, and employed the metal lead, transition metals and lanthanide metals as the center metals, via the solution method and solvothermal method, synthesis 17 kinds of energetic complexes. Furthermore, the elemental analysis, IR spectroscopy, X-ray diffraction and TG-DSC techniques were employed to determine their formula, study the structure and thermal stability. And we found that the bistetrazole as the ligand in the complex exhibited abundant coordination modes including three unreported new modes shown in as-synthesized complexes; as-synthesized complexes in this thesis prossessed good thermal stability and complexes [Co(bta)(en)2][NO3](4) and [Cu(bta)(en)]n (5) even could be stable up to 280℃.The effects of as-synthesized complexes on the thermal decomposition of ammonium perchlorate (AP) were studied by the DSC techniques. The thermal decomposition parameters of the binary mixture systems were calculated by the Kissinger method through the DSC curves at four different heating rates. According to the apparent activation energy, pre-exponential factors and the temperature of thermal decomposition peaks related to the structures and different metals, it is indicated that the complicated 3D polymeric complex exhibits better catalysis than the OD complex; the bis-(tetrazolyl)amine complexes with lead ion are better than the metal of copper and cobalt complexes; different lanthanide metal complexes show the similar catalysis effects on the thermal decomposition of AP.