Aromaticity
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8. Aromatic compounds
8.8 Aromaticity
In this section, you need to know the following information:
1) Hückel’srule for aromaticity:
Followπelectrons : 4n+2
Planarcyclic conjugated system
2) Benzenoid aromatic hydrocarbons
such as, benzene, naphthlene, anthracene, [14]-annulene, [18]-annulene
3)Aromatic hydrocarbon ions
such as cyclopropenylcation, cyclopentadienylanion,
cycloheptatrienylcation, cyclooctatetraenylanion
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