The integration of dinitropyrazole and 1,3,4-oxadiazole:A novel hybrid heterocyclic skeleton for balancing energy and stability  

作　　者：Xiao-xiao Zheng Ting-ou Yan Lei Qian Hong-wei Yang Guang-bin Cheng 

机构地区：[1]School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing,210094,China

出　　处：《Defence Technology（防务技术）》2023年第6期122-128,共7页Defence Technology

基　　金：support from the National Natural Science Foundation of China[No.22075143,21875110];the Science Challenge Project[TZ2018004];the Qing Lan Project for the grant。

摘　　要：In this study,a new energetic hybrid skeleton was constructed through the integration of nitropyrazole and 1,3,4-oxadiazole skeletons in a molecule.Furthermore,the energetic precursor(2),the azo-bridged compound(3),the neutral nitramine(4)and the corresponding energetic salts(5-7)were synthesized.Their physicochemical and energetic properties we re experimentally and theo retically evaluated.Among the developed compounds,the azo-bridged compound(3)and dihydroxylammoinium(6)display high detonation performances(3,D_(v)=8904 m/s,P=34.47 GPa;6,D_(v)=9025 m/s,P=34.66 GPa),moderate sensitivities(3,IS=16 J,FS=120 N;6,IS=20 J,FS=312 N)and good densities(3,1.87 g/cm^(3);6,1.81 g/cm^(3)),which indicates that they have the potential to replace the traditional high-energy explosive RDX.The results show that the integration of different energetic skeletons can achieve a good balance between energy and sensitivity.

关 键 词：HETEROCYCLE Azo-bridged Hybrid skeletons Energetic materials 

分 类 号：TQ560[化学工程—炸药化工]