Parameter in a Brønsted relation expressing the sensitivity of the rate of deprotonation to basicity.
Note:
\(\beta_{\rm{nuc}}\) and \(\beta_{\lg}\) are used to correlate nucleophilic reactivity and leaving-group ability, respectively.
Source:
PAC, 2022, 94, 353. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)' on page 376 (https://doi.org/10.1515/pac-2018-1010)