heterolytic bond-dissociation energy

https://doi.org/10.1351/goldbook.H02810
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..
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)