Organic Chemistry
Organic Chemistry
7th Edition
ISBN: 9780321803221
Author: Paula Y. Bruice
Publisher: Prentice Hall
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Chapter 15.7, Problem 12P

(a)

Interpretation Introduction

Interpretation:

Which underlined proton has the greater chemical shift has to be determined.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton, the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

(b)

Interpretation Introduction

Interpretation:

Which underlined proton has the greater chemical shift has to be determined.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton, the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

(c)

Interpretation Introduction

Interpretation:

Which underlined proton has the greater chemical shift has to be determined.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton, the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

(d)

Interpretation Introduction

Interpretation:

Which underlined proton has the greater chemical shift has to be determined.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton, the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

(e)

Interpretation Introduction

Interpretation:

Which underlined proton has the greater chemical shift has to be determined.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton, the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

(f)

Interpretation Introduction

Interpretation:

Which underlined proton has the greater chemical shift has to be determined.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton, the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

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Chapter 15 Solutions

Organic Chemistry

Ch. 15.6 - Prob. 11PCh. 15.7 - Prob. 12PCh. 15.7 - Prob. 13PCh. 15.7 - Without referring to Table 14.1, label the proton...Ch. 15.8 - [18]-Annulene shows two signals in its 1H NMR...Ch. 15.9 - How would integration distinguish the 1H NMR...Ch. 15.9 - Which of the following compounds is responsible...Ch. 15.10 - Prob. 19PCh. 15.10 - Explain how the following compounds, each with the...Ch. 15.10 - The 1H NMR spectra of two carboxylic acids with...Ch. 15.11 - Draw a diagram like the one shown in Figure 14.12...Ch. 15.12 - Indicate the number of signals and the...Ch. 15.12 - How can their 1H NMR spectra distinguish the...Ch. 15.12 - Identify each compound from its molecular formula...Ch. 15.12 - Prob. 27PCh. 15.12 - Propose structures that are consistent with the...Ch. 15.12 - Describe the 1H NMR spectrum you would expect for...Ch. 15.13 - Prob. 30PCh. 15.13 - Identify the compound with molecular formula...Ch. 15.14 - Prob. 32PCh. 15.15 - a. For the following compounds, which pairs of...Ch. 15.17 - Explain why the chemical shift of the OH proton of...Ch. 15.17 - Prob. 37PCh. 15.17 - Prob. 38PCh. 15.17 - Prob. 39PCh. 15.20 - Answer the following questions for each compound:...Ch. 15.20 - Prob. 41PCh. 15.20 - How can 1,2-, 1,3-, and 1,4-dinitrobenzene be...Ch. 15.20 - Identify each compound below from its molecular...Ch. 15.22 - Prob. 44PCh. 15.22 - What does cross peak X in Figure 14.34 tell you?Ch. 15 - Prob. 46PCh. 15 - Draw a spitting diagram for the Hb proton and give...Ch. 15 - Label each set of chemically equivalent protons,...Ch. 15 - Match each of the 1H NMR spectra with one of the...Ch. 15 - Determine the ratios of the chemically...Ch. 15 - How can 1H NMR distinguish between the compounds...Ch. 15 - Prob. 52PCh. 15 - The 1H NMR spectra of three isomers with molecular...Ch. 15 - Prob. 54PCh. 15 - Prob. 55PCh. 15 - Prob. 56PCh. 15 - Compound A, with molecular formula C4H9Cl, shows...Ch. 15 - The 1H NMR spectra of three isomers with molecular...Ch. 15 - Would it be better to use 1H NMR or 13C NMR...Ch. 15 - There are four esters with molecular formula...Ch. 15 - An alkyl halide reacts with an alkoxide ion to...Ch. 15 - Identity each of the following compounds from its...Ch. 15 - Identity each of the following compounds from its...Ch. 15 - Prob. 64PCh. 15 - How can the signals in the 6.5 to 8.1 ppm region...Ch. 15 - The 1H NMR spectra of two compounds, each with...Ch. 15 - Draw a splitting diagram for the Hb proton if Jbc...Ch. 15 - Sketch the following spectra that would be...Ch. 15 - How can 1H NMR be used to prove that the addition...Ch. 15 - Identity each of the following compounds from its...Ch. 15 - Dr. N. M. Arr was called in to help analyze the 1H...Ch. 15 - Calculate the amount of energy (in calories)...Ch. 15 - The following 1H NMR spectra are four compounds,...Ch. 15 - When compound A (C5H12O) is treated with HBr, it...Ch. 15 - Identity each of the following compounds from its...Ch. 15 - Identify each of the following compounds from its...Ch. 15 - Identity the compound with molecular formula...Ch. 15 - Identify the compound with molecular formula C6H14...
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