The cleavage of a covalent bond so that both bonding electrons remain with one of the two fragments between which the bond is broken, e.g.
H02809.png
Heterolytic bond fission is a feature of many bimolecular reactions in solution (e.g
.electrophilic substitution, nucleophilic substitution).
See also: homolysis, heterolytic bond-dissociation energy
Source:
PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1120 (https://doi.org/10.1351/pac199466051077)