Indicate whether each structure is aromatic, nonaromatic, or antiaromatic.

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Indicate whether each structure is aromatic, nonar

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Answer 1

Answer #1

Concepts and reason

The Hückel's rule is used to classify behavior of the organic compounds into aromatic, antiaromatic, and nonaromatic.

Fundamentals

Hückel's rule:

In organic chemistry, aromatic compounds must obey (4n+ 2)a electrons rule and should have a planar, cyclic structure and fully conjugated (delocalized) double bonds.

Aromatic compounds must possess the following:

• Cyclic

• Planar

• Conjugated pi electrons

• Obeys (4n+ 2)a electrons , where n is a whole number.

Antiaromatic compounds must possess the following:

• Cyclic

• Planar

• Conjugated pi electrons

• Obeys (4n) electrons , where n is a natural number.

Nonaromatic compounds: (other than both)

• acyclic

• nonplanar

• nonconjugated pi electrons

(A)

• Cyclic

• Planar

• Conjugated pi electrons

• 4n electrons

So, the compound is antiaromatic.

(B)

• NH

• Cyclic

• Nonplanar

• Conjugated pi electrons

• (4+2)n electrons

• Nonaromatic due to nonplanar

So, the compound is nonaromatic.

(C)

• Cyclic

• Planar

• Nonconjugated pi electrons

• Nonaromatic due to nonconjugated pi electrons

So, the compound is nonaromatic.

(D)

• Cyclic

• Planar

• Conjugated pi electrons

• 18 n electrons

• Aromatic

So, the compound is aromatic.

(E)

• Acyclic

• Nonplanar

• Nonconjugated pi electrons

• Nonaromatic

So, the compound is nonaromatic.

Ans: Part A

O
aromatic
O
nonaromatic
O
antiaromatic

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Answer 2

Answer #2

Compund B is Aromatic

source: Sapling

answered by: Brianna

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Answer 3

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