geminate pair
Pair of @M03986@ in close proximity in solution within a solvent @C00769@ and resulting from reaction (e.g. bond scission, @E02011@, group transfer) of a precursor that constitutes a single kinetic entity.
See also:
ion pair
radical pair
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1117 [Terms] [Paper]