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Aromatic Hydrocarbons

Aromatic Hydrocarbons

18. Aromaticity / Aromatic Hydrocarbons / Problem 2

Specify whether the ion below is aromatic, nonaromatic, or antiaromatic. If the ion is aromatic/antiaromatic, determine the value of n in Hückel's/Breslow's rule. If the ion is nonaromatic, explain your answer using the rules of aromaticity.

ANSWERS OPTIONS

A

The ion is aromatic, and n = 1.

B

The ion is aromatic, and n = 2.

C

The ion is antiaromatic, and n = 1.

D

The ion is antiaromatic, and n = 2.

E

The ion is nonaromatic because one of the carbons in the ring has no filled or unfilled p orbital.

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