The effect of a range of ionic liquids, with systematic variations in the cation and anion, on the rate constant of an aromatic substitution process was investigated. Temperature-dependent kinetic data allowed calculation of activation parameters for the process in each solvent. These data demonstrate a generalised ionic liquid effect, with an increase in rate constant observed in each ionic solvent, though the microscopic origins of the rate constant enhancement differ with the nature of the ionic liquid.
研究了一系列阳离子和阴离子系统变化的
离子液体对芳香取代过程速率常数的影响。通过与温度相关的动力学数据,可以计算出每种溶剂中该过程的活化参数。这些数据证明了
离子液体效应的普遍性,在每种离子溶剂中都能观察到速率常数的增加,尽管速率常数增加的微观根源因
离子液体的性质而异。