Delocalization
| Formula / Notation | π electrons spread over >2 atoms; resonance |
|---|---|
| Also Known As | Electron delocalisation; resonance; π-electron delocalisation; delocalised electrons; mesomerism; conjugation |
What is Delocalization?
Delocalization in chemistry refers to the distribution of electrons (particularly π electrons or lone pairs) over more than two atoms in a molecule, rather than being localised between one pair of atoms. It occurs in conjugated systems, aromatic compounds, and molecules described by resonance structures. Delocalization generally stabilises molecules (resonance stabilisation energy).
Formula & Notation
Other Names / Synonyms: Electron delocalisation; resonance; π-electron delocalisation; delocalised electrons; mesomerism; conjugation
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Delocalization in chemistry refers to the distribution of electrons (particularly π electrons or lone pairs) over more than two atoms in a molecule, rather than being localised between one pair of atoms. It occurs in conjugated systems, aromatic compounds, and molecules described by resonance structures. Delocalization generally stabilises molecules (resonance stabilisation energy).
Explaining stability of aromatic compounds; predicting reactivity (EAS reactions); conducting polymers (polyacetylene, polyaniline); organic semiconductors; photochemistry and UV-Vis spectroscopy; understanding resonance stabilisation in biochemical molecules (amino acids, porphyrins)
No hazard — a theoretical chemistry concept.
The formula or notation for Delocalization is: π electrons spread over >2 atoms; resonance