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Synthesis and properties of novel ammonium-based room-temperature gemini ionic liquids

机译:新型铵基室温GEMINI离子液体的合成与性能

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摘要

Ammonium-based room-temperature asymmetrical gemini ionic liquids, 1-trimethylammonium-3-(pyridinium) propane bisdicyanamide ([N111C3Py][DCA](2)) and 1-trimethylammonium-3-(1-methylpiperidinium) propane bisdicyanamide ([N(111)C(3)MPi][DCA](2)) were respectively synthesized and structurally characterized by H-1 NMR and C-13 NMR. Thermal stability of the gemini ionic liquids was determined by thermogravimetric analysis under a pure nitrogen atmosphere. Densities and viscosities of pure GILs and their binary mixtures with acetonitrile (MeCN) were investigated over the entire range of mole fractions at various temperatures, from 288.15 to 333.15 K, under atmospheric pressure. Moreover, the excess molar volumes (V-m(E)) and the viscosity deviations (Delta(eta)) of the binary mixtures were evaluated and well fitted to the Redlich-Kister polynomial expression. The negative values of V-m(E) and Delta(eta) result from strong self-association and interaction between the gemini ionic liquidmolecules and MeCN. Results are discussed in terms of molecular interactions and structures.
机译:基于铵的室温不对称双子氨片离子液体,1-三甲基铵-3-(吡啶鎓)丙烷双天氰胺([N111C3PY] [DCA](2))和1-三甲基铵-3-(1-甲基哌啶)丙烷双氰胺([ (111)C(3)MPI] [DCA](2))分别合成并在结构上以H-1 NMR和C-13 NMR为特征。通过纯氮气氛下的热重分析测定Gemini离子液体的热稳定性。在各种温度下的各种温度的整个摩尔级分,在大气压下,在各种温度下的整个摩尔级分的整个摩尔级分范围内研究了纯GIL的密度和二元混合物的粘度和二元混合物。此外,对二元混合物的多余摩尔体积(V-M(e))和粘度偏差(Delta(ETA))评价并良好地安装在Redlich-Ktister多项式表达中。 V-M(E)和Delta(ETA)的负值是由Gemini离子液体分子和Mecn之间的强烈的自我关联和相互作用产生。结果是在分子相互作用和结构方面讨论的。

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  • 来源
    《RSC Advances》 |2018年第46期|共11页
  • 作者

    Yang Xuzhao; Fang Yun;

  • 作者单位

    Jiangnan Univ Sch Chem &

    Mat Engn Minist Educ Key Lab Synthet &

    Biol Colloids Wuxi 214122 Peoples R China;

    Jiangnan Univ Sch Chem &

    Mat Engn Minist Educ Key Lab Synthet &

    Biol Colloids Wuxi 214122 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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