Do aromatic hydrocarbons have at least one planar ring with delocalized p electrons?

1 Answer
Ernest Z.
Jun 13, 2015

No, but aromatic hydrocarbons have at least one planar ring with delocalized π electrons.

Explanation:

There are no atomic #p# orbitals because they have been combined to make molecular π orbitals.

The π orbitals must also contain #4n+2# electrons (the Hückel rule).

The best known aromatic hydrocarbon is benzene.

preparatorychemistry.com

Below are the structures of aromatic hydrocarbons containing more than one ring.

www2.chemistry.msu.edu

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