https://doi.org/10.1351/goldbook.E02130
An atom or group that forms a bond to what is considered to be the main part of the @[email protected] during a reaction. For example: the attacking @[email protected] in a @[email protected] nucleophilic @[email protected]
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1113 [Terms] [Paper]