Term: heterolytic bond-dissociation energy
https://doi.org/10.1351/goldbook.H02810

Definition:
The energy required to break a given bond of some specific compound by heterolysis. For the dissociation of a neutral molecule AB in the gas phase into A+ and B− the heterolytic bond-dissociation energy D(A+B−) is the sum of the bond dissociation energy, D(A–B), and the adiabatic ionization energy of the radical A· minus the electron affinity of the radical B·.

Related Terms:
1) heterolysis (http://doi.org/10.1351/goldbook.H02809).
2) dissociation (http://doi.org/10.1351/goldbook.D01801).
3) bond-dissociation energy (http://doi.org/10.1351/goldbook.B00699).
4) bond dissociation (http://doi.org/10.1351/goldbook.B00698).
5) adiabatic (http://doi.org/10.1351/goldbook.A00141).
6) ionization energy (http://doi.org/10.1351/goldbook.I03199).
7) electron affinity (http://doi.org/10.1351/goldbook.E01977).

Source: PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1121 (https://doi.org/10.1351/pac199466051077)

Citation: 'heterolytic bond-dissociation energy' 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.H02810

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