A new energetic metal-organic framework,[Ag2(HOBTT)]n,was prepared by solvothermal method using 4,5-bis(1-hydroxy-tetrazol)-1,2,3-triazole(H3 OBTT)as ligand and Ag(Ⅰ)as metal center.The structure was characterized by sin-gle crystal X-ray diffraction(SXRD),powder X-ray diffraction(PXRD),infrared spectroscopy(IR)and elemental analysis(EA).The thermal stability was studied by differential scanning calorimeter(DSC)and thermogravimetric(TG)analyzer.The non-isothermal kinetic parameters of thermal decomposition were calculated by Kissinger's method.The mechanical sensitivities of[Ag2(HOBTT)]n were investigated by impact sensitivity meter and friction sensitivity meter.The GGA-PBE functional was used to calculate the detonation heat,and the detonation velocity and detonation pressure were obtained by Kamlet-Jacobs e-quation.The results show that[Ag2(HOBTT)]n is a three-dimensional solvent-free framework,belonging to the orthorhombic crystal system and Fddd space group with crystal density of 3.309 g/cm3.The initial thermal decomposition temperature of[Ag2(HOBTT)]n is 586.6K,corresponding thermal decomposition kinetic parameters Ea=255.18kJ/mol and ln(A/s-1)=43.30.Its impact sensitivity is greater than 40J,friction sensitivity is 108N,detonation velocity and detonation pressure are 9.73km/s and 56.38GPa,respectively,showing that[Ag2(HOBTT)]n is a kind of promising energetic material with good thermal stability,moderate mechanical sensitivity,and excellent detonation performance.
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