The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined. Concept Introduction: In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

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Answer 1

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Chapter 54, Problem 1Q

Interpretation Introduction

Interpretation:

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.

Concept Introduction:

In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

Expert Solution & Answer

Explanation of Solution

The reaction between benzophenone and isopropyl alcohol is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 1

The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.

The mechanism of the given reaction is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 2

Where,

S0 = singlet ground state

S1 = first singlet excited state

T1 = first triplet excited state

ISC = intersystem crossing

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 3

According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.

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Answer 2

Question

Chapter 54, Problem 1Q

Interpretation Introduction

Interpretation:

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.

Concept Introduction:

In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

Expert Solution & Answer

Explanation of Solution

The reaction between benzophenone and isopropyl alcohol is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 1

The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.

The mechanism of the given reaction is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 2

Where,

S0 = singlet ground state

S1 = first singlet excited state

T1 = first triplet excited state

ISC = intersystem crossing

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 3

According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.

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Answer 3

Question

Chapter 54, Problem 1Q

Interpretation Introduction

Interpretation:

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.

Concept Introduction:

In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

Expert Solution & Answer

Explanation of Solution

The reaction between benzophenone and isopropyl alcohol is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 1

The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.

The mechanism of the given reaction is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 2

Where,

S0 = singlet ground state

S1 = first singlet excited state

T1 = first triplet excited state

ISC = intersystem crossing

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 3

According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 54, Problem 1Q

Interpretation Introduction

Interpretation:

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.

Concept Introduction:

In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

Expert Solution & Answer

Explanation of Solution

The reaction between benzophenone and isopropyl alcohol is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 1

The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.

The mechanism of the given reaction is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 2

Where,

S0 = singlet ground state

S1 = first singlet excited state

T1 = first triplet excited state

ISC = intersystem crossing

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 3

According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 54, Problem 1Q

Interpretation Introduction

Interpretation:

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.

Concept Introduction:

In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

Expert Solution & Answer

Explanation of Solution

The reaction between benzophenone and isopropyl alcohol is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 1

The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.

The mechanism of the given reaction is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 2

Where,

S0 = singlet ground state

S1 = first singlet excited state

T1 = first triplet excited state

ISC = intersystem crossing

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 3

According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.

Answer 6

Chapter 54, Problem 1Q

Interpretation Introduction

Interpretation:

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.

Concept Introduction:

In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

Expert Solution & Answer

Explanation of Solution

The reaction between benzophenone and isopropyl alcohol is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 1

The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.

The mechanism of the given reaction is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 2

Where,

S0 = singlet ground state

S1 = first singlet excited state

T1 = first triplet excited state

ISC = intersystem crossing

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 3

According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.

Answer 7

Chapter 54, Problem 1Q

Interpretation Introduction

Interpretation:

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.

Concept Introduction:

In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

Answer 8

Expert Solution & Answer

Explanation of Solution

The reaction between benzophenone and isopropyl alcohol is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 1

The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.

The mechanism of the given reaction is shown below:

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 2

Where,

S0 = singlet ground state

S1 = first singlet excited state

T1 = first triplet excited state

ISC = intersystem crossing

A Small Scale Approach to Organic Laboratory Techniques, Chapter 54, Problem 1Q , additional homework tip 3

According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Ch. 54 - Prob. 1Q

The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined. Concept Introduction: In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.

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