Term: compensation effect
https://doi.org/10.1351/goldbook.C01197

Definition:
In a considerable number of cases plots of TćS vs. ćH, for a series of reactions, e.g. for a reaction in a range of different solvents, are straight lines of approximately unit slope. Therefore, the terms ćH and TćS in the expression partially compensate, and \[\Delta ^{\ddagger}G = \Delta ^{\ddagger}H - T\ \Delta ^{\ddagger}S\] often is a much simpler function of solvent (or other) variation than ćH or TćS separately.

Related Terms:
1) isokinetic relationship (http://doi.org/10.1351/goldbook.I03285).

Source: PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1098 (https://doi.org/10.1351/pac199466051077)

Citation: 'compensation effect' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C01197

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