1,3-Bis(carboxymethyl)imidazolium bis(trifluoromethylsulfonyl)imide organic salt: Synthesis, single crystal structure, vibrational spectra, DFT calculations and physical-chemical properties

Add time:08/25/2019    Source:sciencedirect.com

The bis(trifluoromethylsulfonyl)imide anion (TFSI) is one of the common anions forming hydrophobic ionic liquids at room temperature. In this work, through an introduction of two carboxyl groups into the imidazolium cation, a hydrophilic 1,3-bis(carboxymethyl)imidazolium bis(trifluoromethylsulfonyl)imide (BCITFSI) organic salt was synthesized and its crystal structure, vibrational spectra, physical-chemical properties such as thermal stability, pKa and solubility in water were experimentally determined. Present results are suggesting a possibility to tune the properties of ionic liquids by an appropriate change in cation structure, leading to new “designer solvents”.

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