An explanation as to why three singlets of equal intensity appear at − 60 ° C while the two singlets appear at 36 ° C with the intensity ratio of 2 : 1 for the methyl groups of isopropylmesitylene is to be stated. Concept introduction: Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

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Answer 1

Question

Chapter 16, Problem 16.67AP

Interpretation Introduction

Interpretation:

An explanation as to why three singlets of equal intensity appear at −60 °C while the two singlets appear at 36 °C with the intensity ratio of 2:1 for the methyl groups of isopropylmesitylene is to be stated.

Concept introduction:

Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

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Answer 2

Question

Chapter 16, Problem 16.67AP

Interpretation Introduction

Interpretation:

An explanation as to why three singlets of equal intensity appear at −60 °C while the two singlets appear at 36 °C with the intensity ratio of 2:1 for the methyl groups of isopropylmesitylene is to be stated.

Concept introduction:

Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

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Answer 3

Question

Chapter 16, Problem 16.67AP

Interpretation Introduction

Interpretation:

An explanation as to why three singlets of equal intensity appear at −60 °C while the two singlets appear at 36 °C with the intensity ratio of 2:1 for the methyl groups of isopropylmesitylene is to be stated.

Concept introduction:

Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

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Answer 4

Question

Chapter 16, Problem 16.67AP

Interpretation Introduction

Interpretation:

An explanation as to why three singlets of equal intensity appear at −60 °C while the two singlets appear at 36 °C with the intensity ratio of 2:1 for the methyl groups of isopropylmesitylene is to be stated.

Concept introduction:

Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

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Answer 5

Chapter 16, Problem 16.67AP

Interpretation Introduction

Interpretation:

An explanation as to why three singlets of equal intensity appear at −60 °C while the two singlets appear at 36 °C with the intensity ratio of 2:1 for the methyl groups of isopropylmesitylene is to be stated.

Concept introduction:

Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer 6

Chapter 16, Problem 16.67AP

Interpretation Introduction

Interpretation:

An explanation as to why three singlets of equal intensity appear at −60 °C while the two singlets appear at 36 °C with the intensity ratio of 2:1 for the methyl groups of isopropylmesitylene is to be stated.

Concept introduction:

Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer 7

Chapter 16, Problem 16.67AP

Interpretation Introduction

Interpretation:

An explanation as to why three singlets of equal intensity appear at −60 °C while the two singlets appear at 36 °C with the intensity ratio of 2:1 for the methyl groups of isopropylmesitylene is to be stated.

Concept introduction:

Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 16 - Prob. 16.1P Ch. 16 - Prob. 16.2P Ch. 16 - Prob. 16.3P Ch. 16 - Prob. 16.4P Ch. 16 - Prob. 16.5P Ch. 16 - Prob. 16.6P Ch. 16 - Prob. 16.7P Ch. 16 - Prob. 16.8P Ch. 16 - Prob. 16.9P Ch. 16 - Prob. 16.10P

Solution Summary: The author explains the structure of the isopropylmesitylene.

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Chapter 16 Solutions