intramolecular isotope effect

https://doi.org/10.1351/goldbook.I03132
A @K03405@ observed when a single substrate, in which the isotopic atoms occupy equivalent reactive positions, reacts to produce a non-statistical distribution of @I03352@ products. In such a case the @I03327@ will favour the pathway with lower @F02481@ for displacement of the isotopic nuclei in the @T06468@.
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1130 [Terms] [Paper]