Term: α
https://doi.org/10.1351/goldbook.08143

Definition:
1) Designation applied to the carbon to which a functional group is attached.
2) In carbohydrate nomenclature, a stereochemical designation of the configuration at the anomeric carbon.
3) Parameter in a Brønsted relation expressing the sensitivity of the rate of protonation to acidity.
4) Parameter in Leffler’s relation expressing the sensitivity of changes in Gibbs activation energy to changes in overall Gibbs energy for an elementary reaction.

Link: 
Related Term: leffler’s relation (http://doi.org/10.1351/goldbook.08183).

Source: PAC, 2022, 94, 353. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)' on page 368 (https://doi.org/10.1515/pac-2018-1010)

Citation: 'α' 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.08143

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