摘要
以9-氧杂双环[3.3.1]壬-2,6-二烯为原料经氧化环合、氧化、肟化、偕硝化四步反应合成了一种新型笼状含能化合物4,4,8,8-四硝基-2,6-二氧杂金刚烷。利用核磁共振、红外、元素分析对目标化合物进行了结构表征,通过X-射线单晶衍射确定了晶体结构,采用热重分析(TG)和差示扫描量热法(DSC)联用研究了热稳定性,通过EXPLO5预测了爆轰性能。结果表明,4,4,8,8-四硝基-2,6-二氧杂金刚烷的晶体密度为1.75 g·cm^(-3),属单斜晶系,P21/c空间群,起始分解温度为190.6℃,爆速为7705 m·s^(-1),爆压为25.75 GPa。
A novel cage-like energetic compound,4,4,8,8-tetranitro-2,6-dioxaadamantane,was synthesized via four steps in-volving oxidative cyclization,oxidation,oximation and gem-dinitration by using 9-oxabicyclo[3.3.1]nona-2,6-diene as raw ma-terial.Its structure was characterized by nuclear magnetic resonance(NMR),Fourier transform infrared spectroscopy(FT-IR)and elemental analysis(EA),and single crystal X-ray diffraction(SC-XRD)was adopted to further confirm its crystal structure.The thermal stability was investigated by differential scanning calorimetry-thermogravimetry(DSC-TG)analysis,and detonation parameters were predicted by EXPLO5.Results show that 4,4,8,8-tetranitro-2,6-dioxaadamantane has a crystal density of 1.75 g·cm-3 and belongs to monoclinic system,space groups P21/c.Its thermal decomposition temperature is 190.6℃,theoreti-cal detonation velocity is 7705 m·s-1,and detonation pressure is 25.75 GPa.
作者
李欢
周琪
侯天骄
王桂香
罗军
LI Huan;ZHOU Qi;HOU Tian-jiao;WANG Gui-xiang;LUO Jun(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《含能材料》
北大核心
2025年第6期557-564,共8页
Chinese Journal of Energetic Materials
基金
国家自然科学基金(22075144)。
关键词
氧杂金刚烷
偕二硝基
含能笼状化合物
合成
热稳定性
oxaazaadamantane
gem-dinitration
energetic cage-like compound
synthesis
thermal stability
