Term: mixed energy release
https://doi.org/10.1351/goldbook.M03941

Definition:
This is an effect found in a process A + BC when the attacking species A is heavy. Because A is heavy the A–B distance continues to decrease while the repulsive energy of B–C is being released.

Source: PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 174 (https://doi.org/10.1351/pac199668010149)

Citation: 'mixed energy release' 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.M03941

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