1-pentyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide | 1234261-34-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 1-pentyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide
• 英文别名: 1,2-Dimethyl-3-n-pentyl-imidazolium bis(trifluoromethylsulfonyl)imide；bis(trifluoromethylsulfonyl)azanide;1,2-dimethyl-3-pentylimidazol-1-ium
• CAS: 1234261-34-7
• 化学式: C₂F₆NO₄S₂*C₁₀H₁₉N₂
• 分子量: 447.423
• InChiKey: VBCMQBSWVLPQHX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.87
• 重原子数：
  27
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  94.8
• 氢给体数：
  0
• 氢受体数：
  11

反应信息

• 作为产物：
  描述：

  1,2-Dimethyl-3-pentylimidazol-1-ium;bromide 、 bis(trifluoromethane)sulfonimide lithium 以 水 为溶剂， 反应 4.0h， 生成 1-pentyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide
  参考文献：
  名称：

  1-Alkyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquids as highly safe electrolyte for Li/LiFePO4 battery

  摘要：

  Several 1-alkyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquids (alkyl-DMimTFSI) were prepared by changing carbon chain lengths and configuration of the alkyl group, and their electrochemical properties and compatibility with Li/LiFePO4 battery electrodes were investigated in detail. Experiments indicated the type of ionic liquid has a wide electrochemical window (-0.16 to 5.2V vs. Li+/Li) and are theoretically feasible as an electrolyte for batteries with metallic lithium as anode. Addition of vinylene carbonate (VC) improves the compatibility of alkyl-DMimTFSI-based electrolytes towards lithium anode and LiFePO4 cathode, and enhanced the formation of solid electrolyte interface to protect lithium anodes from corrosion. The electrochemical properties of the ionic liquids obviously depend on carbon chain length and configuration of the alkyl, including ionic conductivity, viscosity, and charge/discharge capacity etc. Among five alkyl-DMimTFSI-LiTFSI-VC electrolytes. Li/LiFePO4 battery with the electrolyte-based on amyl-DMimTESI shows best charge/discharge capacity and reversibility due to relatively high conductivity and low viscosity, its initial discharge capacity is about 152.6 mAh g(-1), which the value is near to theoretical specific capacity (170 mAh g(-1)). Although the battery with electrolyte-based isooctyl-DMimTFSI has lowest initial discharge capacity (8.1 mAh g(-1)) due to relatively poor conductivity and high viscosity, the value will be dramatically added to 129.6 mAh g(-1) when 10% propylene carbonate was introduced into the ternary electrolyte as diluent. These results clearly indicates this type of ionic liquids have fine application prospect for lithium batteries as highly safety electrolytes in the future. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.electacta.2010.03.043

文献信息

• Isoamyl acetate synthesis in imidazolium-based ionic liquids using packed bed enzyme microreactor
  作者：Marina Cvjetko、Jasna Vorkapić-Furač、Polona Žnidaršič-Plazl

  DOI：10.1016/j.procbio.2012.04.028

  日期：2012.9

  The acylation of isoamyl alcohol with acetic anhydride catalyzed by immobilized Candida antarctica lipase B was studied in ionic liquids (ILs) based on quaternary imidazolium cations with alkyl, alkenyl, alkynyl, benzyl, alkoxyl or N-aminopropyl side chains. Among the tested ILs, the highest enzyme activity together with the highest isoamyl acetate yield were obtained in [C(7)mmim][Tf2N].No loss of lipase B activity was observed during one-month incubation in this hydrophobic IL without the presence of substrates. Isoamyl acetate synthesis using [C(7)mmim][Tf2N] as solvent was further studied in a continuously operated miniaturized enzymatic packed bed reactor at various flow rates and temperatures. Up to 92% isoamyl acetate yield could be obtained within 15 min by using 0.5 M acetic anhydride and 1.5 M isoamyl alcohol inlet concentrations at 55 degrees C, corresponding to the volumetric productivity of 61 mmol l(-1) min(-1), which to the best of our knowledge is the highest reported so far for this reaction. No decrease in productivity was experienced during the subsequent runs of continuous microbioreactor operation performed within 14 consecutive days. The benefits of reactor miniaturization along with the green solvent application were therefore successfully exploited for the development of a sustainable flavour ester production. (C) 2012 Elsevier Ltd. All rights reserved.