Term: parallel effect
https://doi.org/10.1351/goldbook.08194

Definition:
Change of the position of the transition state upon stabilization or destabilization of a structure (or structures) along the assumed minimum-energy reaction path.

Source: PAC, 2022, 94, 353. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)' on page 478 (https://doi.org/10.1515/pac-2018-1010)

Citation: 'parallel 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.08194

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