https://doi.org/10.1351/goldbook.A00138
A new @[email protected] AB, each @[email protected] of which is formed by direct combination of two separate molecular entities A and B in such a way that there is change in @[email protected], but no loss, of atoms within the @[email protected] A and B. Stoichiometries other than 1:1 are also possible, e.g. a bis-adduct (2:1). An @[email protected] can be formed when A and B are groups contained within the same molecular entity. This is a general term which, whenever appropriate, should be used in preference to the less explicit term @[email protected] It is also used specifically for products of an @[email protected] For examples, see @[email protected], @[email protected], @[email protected]
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1082 [Terms] [Paper]