The skeleton of 5,7-fused bicyclic imidazole-diazepine for heat-resistant energetic materials

作     者：Xiaoxiao Zheng Yubing Xue Changhao Dai Hongwei Yang Guangbin Cheng Xiaoxiao Zheng;Yubing Xue;Changhao Dai;Hongwei Yang;Guangbin Cheng

作者机构：School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China 

出 版 物：《Defence Technology(防务技术)》 (Defence Technology)

年 卷 期：2023年第27卷第9期

页      面：193-199页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 082604[工学-军事化学与烟火技术] 08[工学] 0826[工学-兵器科学与技术] 

基　　金：support from the National Natural Science Foundation of China(Grant No.22075143,21875110) the Science Challenge Project(Grant No.TZ2018004) the Qing Lan Project for the grant 

主　　题：Imidazole-diazepine Heat-resistant material 5,7-Fused skeleton Energetic materials 

摘      要：In light of the low yields and complex reaction routes of some well-known 5,5-fused and 5,6-fused bicyclic compounds,a series of 5,7-fused bicyclic imidazole-diazepine compounds were developed with high yields by only two efficient ***,the seven-membered heterocyclic ring has a stable energetic skeleton with multiple modifiable ***,the 5,7-fused bicyclic energetic compounds were rarely reported in the area of energetic *** neutral compounds 1,2 and 4 were synthesized in this *** improve the detonation performances of the 5,7-fused neutral compounds,corresponding perchlorate 1a and 2a were further *** physicochemical and energetic performances of all newly developed compounds were experimentally *** newly prepared energetic compounds exhibit high decomposition temperatures(Td:243.8-336℃)and low mechanical sensitivities(IS:15 J,FS:280 N).Among them,the velocities performances of 1a(Dv=7651 m/s)and 4(Dv=7600 m/s)are comparable to that of typical heat-resistant energetic material HNS(Dv=7612 m/s).Meanwhile,the high decomposition temperature and low mechanical sensitivities(Td=336℃;IS=32 J;FS353 N)of 4 are superior to that of HNS(Td=318℃;IS=5 J;FS=250 N).Hence,the 5,7-fused bicyclic compounds with high thermostability,low sensitivities and adjustable detonation performance have a clear tendency to open up a new space for the development of heat-resistant energetic materials.