Abstract
AbstractA thermochemical investigation of the series of 1‐alkyl‐3‐methylimidazolium ionic liquids (ILs) with the trifluromethanesulfonate CF3SO3− anion is presented. Absolute vapor pressures and vaporization enthalpies were measured by using a quartz crystal microbalance (QCM). The enthalpies of solutions were determined by solution calorimetry. Gas‐phase enthalpies of the formation of ILs were calculated by applying the high‐level quantum‐chemical method G3MP2. From a combination of experimental and theoretical results, the enthalpy of formation of aqueous CF3SO3− anion was derived for the first time.
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