Term: centrifugal barrier
https://doi.org/10.1351/goldbook.C00934

Definition:
In a reaction without an electronic energy barrier, or its reverse, the rotational energy of the transition state gives rise to a reaction barrier, which is known as the centrifugal barrier.

Related Terms:
1) transition state (http://doi.org/10.1351/goldbook.T06468).
2) reaction barrier (http://doi.org/10.1351/goldbook.R05166).

Source: PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 156 (https://doi.org/10.1351/pac199668010149)

Citation: 'centrifugal barrier' 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.C00934

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