A
complex of
molecular entities produced at an
encounter-controlled rate, and which occurs as an intermediate in a
reaction mechanism. When the complex is formed from two molecular entities it is called an '
encounter pair'. A distinction between
encounter pairs and (larger)
encounter complexes may be relevant in some cases, e.g. for mechanisms involving
pre-association.
Source:
PAC, 1994, 66, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1112
See also:
PAC, 1996, 68, 2223
(Glossary of terms used in photochemistry (IUPAC Recommendations 1996))
on page 2239
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
