Orbital energy diagrams for [10]annulene and [12]annulene are to be constructed and the aromaticity of either one is to be determined on the basis of Huckel’s rule . Concept introduction: Huckel MOs are determined by constructing Frost’s circle. It is a polygon with appropriate number of sides inscribed in a circle with one of the corners at the bottom. A horizontal line is drawn through the center of the diagram. MOs that lie below this line are bonding MOs; those on the line are nonbonding while those above the line are antibonding MOs. In an aromatic compound , all pi-electrons are paired up in bonding MOs. If there are unpaired electrons, then the compound is anti-aromatic or non-aromatic.

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Answer 1

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Definition Definition Rule that estimates whether a given organic planar ring structure will show an aromatic property. A cyclic ring molecule is said to follow Hückel’s rule if the л-electrons count in a molecule is [4n+2], where n stands for a positive numerical value. It is also called the [4n+2] rule. Hückel's rule, sometimes referred to as the aromaticity rule, is one but not the only criteria to judge a molecule for aromaticity.

Chapter 12.19, Problem 21P

Interpretation Introduction

Interpretation:

Orbital energy diagrams for [10]annulene and [12]annulene are to be constructed and the aromaticity of either one is to be determined on the basis of Huckel’s rule.

Concept introduction:

Huckel MOs are determined by constructing Frost’s circle. It is a polygon with appropriate number of sides inscribed in a circle with one of the corners at the bottom. A horizontal line is drawn through the center of the diagram. MOs that lie below this line are bonding MOs; those on the line are nonbonding while those above the line are antibonding MOs.

In an aromatic compound, all pi-electrons are paired up in bonding MOs. If there are unpaired electrons, then the compound is anti-aromatic or non-aromatic.

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Answer 2

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Definition Definition Rule that estimates whether a given organic planar ring structure will show an aromatic property. A cyclic ring molecule is said to follow Hückel’s rule if the л-electrons count in a molecule is [4n+2], where n stands for a positive numerical value. It is also called the [4n+2] rule. Hückel's rule, sometimes referred to as the aromaticity rule, is one but not the only criteria to judge a molecule for aromaticity.

Chapter 12.19, Problem 21P

Interpretation Introduction

Interpretation:

Orbital energy diagrams for [10]annulene and [12]annulene are to be constructed and the aromaticity of either one is to be determined on the basis of Huckel’s rule.

Concept introduction:

Huckel MOs are determined by constructing Frost’s circle. It is a polygon with appropriate number of sides inscribed in a circle with one of the corners at the bottom. A horizontal line is drawn through the center of the diagram. MOs that lie below this line are bonding MOs; those on the line are nonbonding while those above the line are antibonding MOs.

In an aromatic compound, all pi-electrons are paired up in bonding MOs. If there are unpaired electrons, then the compound is anti-aromatic or non-aromatic.

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Answer 3

Question

Definition Definition Rule that estimates whether a given organic planar ring structure will show an aromatic property. A cyclic ring molecule is said to follow Hückel’s rule if the л-electrons count in a molecule is [4n+2], where n stands for a positive numerical value. It is also called the [4n+2] rule. Hückel's rule, sometimes referred to as the aromaticity rule, is one but not the only criteria to judge a molecule for aromaticity.

Chapter 12.19, Problem 21P

Interpretation Introduction

Interpretation:

Orbital energy diagrams for [10]annulene and [12]annulene are to be constructed and the aromaticity of either one is to be determined on the basis of Huckel’s rule.

Concept introduction:

Huckel MOs are determined by constructing Frost’s circle. It is a polygon with appropriate number of sides inscribed in a circle with one of the corners at the bottom. A horizontal line is drawn through the center of the diagram. MOs that lie below this line are bonding MOs; those on the line are nonbonding while those above the line are antibonding MOs.

In an aromatic compound, all pi-electrons are paired up in bonding MOs. If there are unpaired electrons, then the compound is anti-aromatic or non-aromatic.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Rule that estimates whether a given organic planar ring structure will show an aromatic property. A cyclic ring molecule is said to follow Hückel’s rule if the л-electrons count in a molecule is [4n+2], where n stands for a positive numerical value. It is also called the [4n+2] rule. Hückel's rule, sometimes referred to as the aromaticity rule, is one but not the only criteria to judge a molecule for aromaticity.

Chapter 12.19, Problem 21P

Interpretation Introduction