Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (3): 617-623.doi: 10.3866/PKU.WHXB201512171

• ARTICLE • Previous Articles     Next Articles

Properties of 1-(Cyanopropyl)-3-methylimidazolium Bis[(trifluoromethyl)sulfonyl]imide

Qing-Shan LIU1,*(),Hui LIU2,3,Lin MOU1,*()   

  1. 1 School of Science, Shenyang Agricultural University, Shenyang 110866, P. R. China
    2 Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd., Shanghai 200232, P. R. China
    3 Shanghai Engineering Research Center of Contaminated Sites Remediation, Shanghai 200232, P. R. China
  • Received:2015-08-03 Published:2016-03-04
  • Contact: Qing-Shan LIU,Lin MOU;
  • Supported by:
    the National Natural Science Foundation of China(21203193);Program for Liaoning Excellent Talents in University, China(LJQ2015099)


The functional ionic liquid (FIL) 1-(cyanopropyl)-3-methylimidazolium bis[(trifluoromethyl)sulfonyl] imide [PCNMIM][NTf2] was synthesized using an ion-exchange method. Density, dynamic viscosity, electrical conductivity, and refractive index were determined in the temperature range 283.15-353.15 K. The effect of methylene group introduction is discussed for the FILs and imidazolium ionic liquids (ILs). The thermal expansion coefficient, molecular volume, standard molar entropy, and lattice energy were determined by the empirical equations from the measurement values. The temperature dependence on electrical conductivity and dynamic viscosity of the FILs were fitted by the Vogel-Fulcher-Tammann (VFT) equation. The adaptability of the Arrhenius equation was also discussed for the electrical conductivity and dynamic viscosity. The study of the thermodynamic properties of the FIL is important for synthesis of new ILs and their application.

Key words: Functional ionic liquid, Density, Dynamic viscosity, Electrical conductivity, Refractive index