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  • Title: Single Quality Factor for Enthalpy-Entropy Compensation, Isoequilibrium and Isokinetic Relationships.
    Author: Griessen R, Boelsma C, Schreuders H, Broedersz CP, Gremaud R, Dam B.
    Journal: Chemphyschem; 2020 Aug 04; 21(15):1632-1643. PubMed ID: 32573925.
    Abstract:
    Enthalpy-entropy compensation (EEC) is very often encountered in chemistry, biology and physics. Its origin is widely discussed since it would allow, for example, a very accurate tuning of the thermodynamic properties as a function of the reactants. However, EEC is often discarded as a statistical artefact, especially when only a limited temperature range is considered. We show that the likeliness of a statistical origin of an EEC can be established with a compensation quality factor (CQF) that depends only on the measured enthalpies and entropies and the experimental temperature range. This is directly derived from a comparison of the CQF with threshold values obtained from a large number of simulations with randomly generated Van 't Hoff plots. The value of CQF is furthermore a direct measure of the existence of a genuine isoequilibrium or isokinetic relationship.
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