n-σ* delocalization

synonym: n-σ* no bond resonance
https://doi.org/10.1351/goldbook.N04080
Delocalization of a free electron pair (n) into an antibonding $\ce{\upsigma\!\mbox{-}orbital}$ ($\ce{\upsigma\!^{\ast}}$).
See: delocalization, hyperconjugation, resonance
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1146 [Terms] [Paper]
Citation: 'n-σ* delocalization' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.N04080 RIS BibTex EndNote
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