含能材料2024，Vol.32Issue(6)：615-622,8.DOI:10.11943/CJEM2024039
两种富氮稠环型1,2,5-噁二唑类含能盐的合成及性能
Synthesis and Properties of Two 1,2,5-Oxadiazole based Energetic Salts with Nitrogen-Rich Fused Ring Skeleton
摘要
Abstract
Two nitrogen-rich energetic salts,5,5'-(hydrazine-1,2-diyl)bis(5,7-dihydro-[1,2,5]oxadiazolo[3,4-e][1,2,4]tri-azolo[4,3-a]pyrimidine-8(4H)-one)perchlorate(2)and 5,5'-(diazene-1,2-diyl)bis([1,2,5]oxadiazolo[3,4-e][1,2,4]triazo-lo[4,3-a]pyrimidine-8(7H)-one)nitrate(3)were accomplished from the raw material of 5,6-diamino-[1,2,5]oxadiazolo[3,4-b]pyrazine(1).Structure characterization of energetic ionic salts 2 and 3 were achieved through various techniques,includ-ing Nuclear Magnetic Resonance Spectroscopy(NMR),Fourier Transform infrared spectroscopy(FTIR),elemental analysis(EA)and X-ray single crystal diffraction(XRD).Their thermal decomposition behaviors were investigated using differential scan-ning calorimetry(DSC)method,while their friction and impact sensitivities were identified according to BAM standard test meth-ods.Moreover,their detonation performances were predicted based on the combination of Isodesmic Reactions and EXPLO5 soft-ware.The results prove that compounds 2 and 3 crystallize in the monoclinic system,belonging to space groups Pn and P21/n,re-spectively.The cationic parts of their crystal structures show good planarity and intensive hydrogen bonds in the crystal packing are observed.The thermal decomposition temperatures of compounds 2 and 3 are 154℃and 130℃,respectively.Their theoreti-cal detonation velocities are 7722 m·s-1 and 8008 m·s-1,while their theoretical detonation pressures are 26.3 GPa and 28.4 GPa,respectively.Their friction sensitivities are both 360 N,and impact sensitivities are greater than 40 J.Compounds 2 and 3 outper-form traditional explosives TNT in terms of detonation performance,friction sensitivity,and impact sensitivity.关键词
噁二唑/三唑/吡嗪/含能离子盐/富氮稠环/晶体结构/性能Key words
oxadiazole/triazole/pyrazine/energetic salts/nitrogen-rich fused ring/crystal structure/properties分类
军事科技引用本文复制引用
李涛,易文斌,于琼..两种富氮稠环型1,2,5-噁二唑类含能盐的合成及性能[J].含能材料,2024,32(6):615-622,8.基金项目
国家自然科学基金(22305124) （22305124）
江苏省自然科学基金(BK20220967) National Natural Science Foundation of China(No.22305124) （BK20220967）
Natural Science Foundation of Jiangsu Prov-ince(No.BK20220967) （No.BK20220967）
