Term: intrinsic reaction coordinate
https://doi.org/10.1351/goldbook.IT07057

Definition:
A minimum-energy reaction path on a potential energy surface in mass-weighted coordinates, connecting reactants to products via the transition state.

Related Terms:
1) minimum-energy reaction path (http://doi.org/10.1351/goldbook.M03931).
2) transition state (http://doi.org/10.1351/goldbook.T06468).

Source: PAC, 1999, 71, 1919. 'Glossary of terms used in theoretical organic chemistry' on page 1947 (https://doi.org/10.1351/pac199971101919)

Citation: 'intrinsic reaction coordinate' 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.IT07057

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