(a) Interpretation: The 1 H and 19 F spectra of FC 2 H should be predicted. Concept introduction: Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Question

Draw the Lewis structure of the SO3-O(CH3)2 complex shown in the bottom right of slide 2in lecture 3-3 (“Me” means a CH3 group) – include all valence electron pairs and formal charges.From this structure, should the complex be a stable molecule? Explain.

Answer 1

Question

Chapter 19, Problem 19.20QAP

Interpretation Introduction

(a)

Interpretation:

The ¹H and ¹⁹F spectra of FC₂H should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(b)

Interpretation:

The ¹H and ¹⁹F spectra of CF₃CH₃ should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(c)

Interpretation:

The ¹H and ¹⁹F spectra of (CH₃)CF should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

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Draw the Lewis structure of the SO3-O(CH3)2 complex shown in the bottom right of slide 2in lecture 3-3 (“Me” means a CH3 group) – include all valence electron pairs and formal charges.From this structure, should the complex be a stable molecule? Explain.

Predict all organic product(s), including stereoisomers when applicable.

Q5: Propose a reasonable synthesis for the following decalin derivative. using only decalin and alkanes of 3 or fewer carbons. Decalin H3C HO க CH3

Answer 2

Question

Chapter 19, Problem 19.20QAP

Interpretation Introduction

(a)

Interpretation:

The ¹H and ¹⁹F spectra of FC₂H should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(b)

Interpretation:

The ¹H and ¹⁹F spectra of CF₃CH₃ should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(c)

Interpretation:

The ¹H and ¹⁹F spectra of (CH₃)CF should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

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Answer 3

Question

Chapter 19, Problem 19.20QAP

Interpretation Introduction

(a)

Interpretation:

The ¹H and ¹⁹F spectra of FC₂H should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(b)

Interpretation:

The ¹H and ¹⁹F spectra of CF₃CH₃ should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(c)

Interpretation:

The ¹H and ¹⁹F spectra of (CH₃)CF should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

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Answer 4

Question

Chapter 19, Problem 19.20QAP

Interpretation Introduction

(a)

Interpretation:

The ¹H and ¹⁹F spectra of FC₂H should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(b)

Interpretation:

The ¹H and ¹⁹F spectra of CF₃CH₃ should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(c)

Interpretation:

The ¹H and ¹⁹F spectra of (CH₃)CF should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

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Answer 5

Chapter 19, Problem 19.20QAP

Interpretation Introduction

(a)

Interpretation:

The ¹H and ¹⁹F spectra of FC₂H should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(b)

Interpretation:

The ¹H and ¹⁹F spectra of CF₃CH₃ should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Interpretation Introduction

(c)

Interpretation:

The ¹H and ¹⁹F spectra of (CH₃)CF should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Answer 6

Chapter 19, Problem 19.20QAP

Interpretation Introduction

(a)

Interpretation:

The ¹H and ¹⁹F spectra of FC₂H should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Answer 7

Chapter 19, Problem 19.20QAP

Interpretation Introduction

(a)

Interpretation:

The ¹H and ¹⁹F spectra of FC₂H should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The ¹H and ¹⁹F spectra of CF₃CH₃ should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The ¹H and ¹⁹F spectra of CF₃CH₃ should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The ¹H and ¹⁹F spectra of (CH₃)CF should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The ¹H and ¹⁹F spectra of (CH₃)CF should be predicted.

Concept introduction:

Spin-spin coupling is a phenomenon which is caused by the spin coupling between two chemically different nuclei which are NMR active. This effect is indicated through peak splitting in NMR spectra. Coupling constant is a measure of interactions between NMR active nuclei.

Answer 12

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Answer 23

Ch. 19 - Prob. 19.1QAP Ch. 19 - Prob. 19.2QAP Ch. 19 - Prob. 19.3QAP Ch. 19 - Prob. 19.4QAP Ch. 19 - Prob. 19.5QAP Ch. 19 - A nucleus has a spin quantum number of 7/2. How...Ch. 19 - Prob. 19.7QAP Ch. 19 - Prob. 19.8QAP Ch. 19 - Prob. 19.9QAP Ch. 19 - Why is 133C-133C spin-spin splitting not observed...

Chapter 19 Solutions