(a) Interpretation: The observation in the spectrum of 2 , 2 , 3 , 3 − tetrachlorobutane on changing temperature from 25 ° C to − 45 ° C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

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Answer 1

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Chapter 13, Problem 13.65AP

Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3− tetrachlorobutane on changing temperature from 25 °C to −45 °C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

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Students have asked these similar questions

(a) Draw all six isomers of formula C4H8 (including stereoisomers).(b) For each structure, show how many types of H would appear in the proton NMR spectrum.(c) For each structure, show how many types of C would appear in the 13C NMR spectrum.

Predict the structure of a compound based on this 13C NMR spectra. The chemical formula of this compound is C4H6O2. Briefly explain your answer.

The 1H NMR spectrum of CH3OH recorded on a 500 MHz NMR spectrometer consists of two signals, one due to the CH3 protons at 1715 Hz and one due to the OH proton at 1830 Hz, both measured downeld from TMS. (a) Calculate the chemical shift of each absorption. (b) Do the CH3 protons absorb upeld or downeld from the OH proton?

Answer 2

Question

Chapter 13, Problem 13.65AP

Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3− tetrachlorobutane on changing temperature from 25 °C to −45 °C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

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Answer 3

Question

Chapter 13, Problem 13.65AP

Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3− tetrachlorobutane on changing temperature from 25 °C to −45 °C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

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Answer 4

Question

Chapter 13, Problem 13.65AP

Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3− tetrachlorobutane on changing temperature from 25 °C to −45 °C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

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Answer 5

Chapter 13, Problem 13.65AP

Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3− tetrachlorobutane on changing temperature from 25 °C to −45 °C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Answer 6

Chapter 13, Problem 13.65AP

Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3− tetrachlorobutane on changing temperature from 25 °C to −45 °C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Answer 7

Chapter 13, Problem 13.65AP

Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3− tetrachlorobutane on changing temperature from 25 °C to −45 °C 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities 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. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 13 - Prob. 13.1P Ch. 13 - Prob. 13.2P Ch. 13 - Prob. 13.3P Ch. 13 - Prob. 13.4P Ch. 13 - Prob. 13.5P Ch. 13 - Prob. 13.6P Ch. 13 - Prob. 13.7P Ch. 13 - Prob. 13.8P Ch. 13 - Prob. 13.9P Ch. 13 - Prob. 13.10P

Solution Summary: The author explains that there are two different structures possible for 2,2,3,3-tetrachlorobutane.

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