valence tautomerization

https://doi.org/10.1351/goldbook.V06591
The term describes simple reversible and generally rapid @I03295@ or @D01559@ involving the formation and rupture of single and/or double bonds, without @M03920@ of atoms or groups; e.g.
V06591.png
See also:
fluxional
,
tautomerism
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1175 [Terms] [Paper]