Question:

Cyclopentadienyl anion is

Updated On: May 22, 2024

benzenoid and aromatic
non-benzenoid and aromatic
non-benzenoid and non-aromatic
non-benzenoid and anti-aromatic

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The Correct Option is B

Solution and Explanation

Cyclopentadienyl anion. It is cyclic,
planar with $(4 n+2) \pi e^{-}$. Therefore
aromatic but structure is not similar to benzene.

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Concepts Used:

Aromatic hydrocarbon

Aromatic hydrocarbons, sometimes known as arenes, are aromatic organic molecules made up entirely of carbon and hydrogen. In aromatic compounds a benzene ring which is named after the simple aromatic chemical benzene, or a phenyl group when part of a larger structure, is the configuration of six carbon atoms.

Read More: Aromaticity

Reactions of Aromatic Hydrocarbons:

1. Aromatic Substitution Reactions

This reaction involves the replacement of one substituent on the ring of an aromatic hydrocarbon, commonly a hydrogen atom, by a different substituent group.

The common types of aromatic substitution reactions are:

Nucleophilic aromatic substitution reactions
Electrophilic aromatic substitution reactions
Radical nucleophilic aromatic substitution reactions

2. Coupling Reactions

In these types of reactions, the coupling of two fragments that have a radical nature is achieved with the help of a metal catalyst