7: Conjugated Pi Systems
- Page ID
- 469404
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- 7.6: Aromaticity and the Hückel 4n + 2 Rule
- In 1931, German chemist and physicist Erich Hückel proposed a theory to help determine if a planar ring molecule would have aromatic properties. His rule states that if a cyclic, planar molecule has 4n+2 π electrons, it is considered aromatic. This rule would come to be known as Hückel's Rule.
- 7.7: Aromatic Ions
- Carbanions and carbocations may also show aromatic stabilization.