The effect on the rate or @E02177@ of two reactions that differ only in the isotopic composition of one or more of their otherwise chemically identical components is referred to as a @K03405@ or a @T06319@ (or equilibrium) isotope effect, respectively.
Sources: PAC, 1994,
66, 1077. (
Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1130 [
Terms] [
Paper]
PAC, 1994,
66, 2513. (
Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2521 [
Terms] [
Paper]
See also: PAC, 1996,
68, 149. (
A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 170 [
Terms] [
Paper]