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Insensitive energetic 5-nitroaminotetrazolate ionic liquids

机译:不敏感的能量5-硝基氨基替辛四氟氨酸离子液体

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摘要

Five energetic ionic liquids of 5-nitroaminotetrazolate anion (NAT) combined with 1,3-dimethylimidazolium (1), 1-ethyl-3-methylimidazolium (2), 1-butyl-3-methylimidazolium (3), 1-hexyl-3-methylimidazolium (4), and 1-methyl-3-octylimidazolium (5) cations were synthesized in high yields and fully characterized by IR, NMR and elemental analysis. Colorless block crystals of 1 were isolated in methanol/ethanol and crystallized in the orthorhombic system Fdd2(43) (a = 49.337(3) angstrom, b = 20.9073(12) angstrom, c = 3.6993(2) angstrom, V = 3815.84(38) angstrom(3), Z = 16). The ionic liquids 1-5 are thermally stable at temperatures higher than 200 degrees C. Among them, 2-5 are found to be room temperature ionic liquids. The heats of formation of 1-5 obtained by both experimental and theoretical methods are all positive. 1 possesses the highest value of 194.6 kJ mol(-1) and 0.86 kJ g(-1). These novel NAT energetic ionic liquids contain only C, H, N and O elements. The CHNO type ionic liquids 1-5 are insensitive towards impact (>40 J) and friction (>360 N). They showed good combustion characteristics after being ignited by a flame. They are of interest as liquid energetic materials with modestly high energy, high thermal stability, and good insensitivity to impact and friction, as well as environmentally friendly decomposition gases.
机译:5硝基氨基氨基四氨基甲酸盐阴离子(NAT)的五种能量离子液体与1,3-二甲基咪唑鎓(1),1-乙基-3-甲基咪唑鎓(2),1-丁基-3-甲基咪唑(3),1-己基-3 - 甲基咪唑鎓(4),并以高产率合成1-甲基-3-辛基咪唑鎓(5)次阳离子,并通过IR,NMR和元素分析完全表征。在甲醇/乙醇中分离1的无色嵌段晶体,并在正交系统FDD2(43)中结晶(a = 49.337(3)埃,B = 20.9073(12)埃,C = 3.6993(2)埃,V = 3815.84( 38)Angstrom(3),Z = 16)。离子液体1-5在高于200℃的温度下热稳定。其中,发现2-5是室温离子液体。通过实验和理论方法获得的1-5的形成热量是阳性的。 1具有194.6 kJ摩尔(-1)和0.86 kJ g(-1)的最高值。这些新型NAT能量离子液体仅含有C,H,N和O元素。 CHNO型离子液体1-5对冲击(> 40J)和摩擦(> 360N)不敏感。它们在被火焰点燃后显示出良好的燃烧特性。它们具有兴趣的液体能量材料,具有适度的能量高,热稳定性高,对冲击和摩擦的良好不敏感,以及环保的分解气体。

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  • 来源
    《RSC Advances》 |2015年第67期|共8页
  • 作者单位

    Sichuan Univ Coll Chem Chengdu 610064 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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