Synthesis And Properties Of Oxygen-rich Poly-nitrogen Bis-triazoles-metal Complexes

In recent years,Nitrogen-rich heteroaromatic metal complexes have emerged as a new class of Metal-Organic materials with rich electronic effect,unsaturated metal sites,efficient active points.These properties makes metal coordination compounds for potential applications in optics,magnetism,gas adsorption.At the same time,theses metal complexes could also be high energy density materials because of their high density,high heats of detonation,high heat resistance,environmentally benign nitrogen gas.Despite these advances,current energetic coordination compounds are limited to be a or multiple nitrogen heterocyclic,which structure with less coordination bond,low nitrogen content and low oxygen content.A series of oxygen-rich poly-nitrogen heterocyclic metal complexes have been designed and synthesized for the first time in the paper;Their structures,properties and the synthetic methods of ligands have also been investigated.Researching progress of energetic coordination compounds in the first chapter,Based on this,puts forward the research significance of this paper.A variety of nitrogen-rich heterocyclic compounds such as bis-1,2,4-triazoles were synthesized in chapter 2,and the structures of these compounds were identified and characterized by IR,Roman,MS,elemental analysis and NMR.These compounds have properties of high nitrogen content,high heat of formation and good thermal stability.Besides,because of theirs longer molecular size,they can be used as the organic ligands to generate the metal-organic frameworks with large pore size.Through solvothermal synthesis in chapter 3,six novel energetic metal organic complexes [Cu?DABT?₂?NO₃?₂?HCOOH?₂]·8H₂ O,[Zn?DABT?₂?NO₃?₂]·2H₂ O,[Cu?DABT?₂?NO₃?₂]·2H₂ O,[Cu₂?DNBT?₂]·8H₂ O,[Zn?DNBT?]·4H₂ O and one dimensional MOFs [Cu?DNBTO??atrz?]·H₂ O which use enriched oxygen poly-nitrogen heterocycles as ligands have been designed and synthesized for the first time.These complexes were characterized by XRD,IR and X-ray single crystal diffraction.The thermal stability,sensitivity and detonation performance of the[Cu?DABT?₂?NO₃?₂?HCOOH?₂]·8H₂ O,[Zn?DABT?₂?NO₃?₂]·2H₂ O,[Cu?DABT?₂?NO₃?₂]·2H₂ O,[Cu2?DNBT?₂]·8H₂ O,[Zn?DNBT?]·4H₂ O and one dimensional MOFs[Cu?DNBTO??atrz?]·H₂ O were tested in chapter 4.