Organic Chemistry
Organic Chemistry
11th Edition
ISBN: 9781118133576
Author: T. W. Graham Solomons, Craig Fryhle
Publisher: Wiley, John & Sons, Incorporated
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Chapter 9, Problem 5PP
Interpretation Introduction

Interpretation:

Diastereomers, chemically nonequivalent sets of protons, and 1HNMR signals are to be determined.

Concept introduction:

Nuclear magnetic resonance (NMR) is one of the most capable analytical techniques used for determining the functional groups and how the atoms are structured and arranged in a molecule.

When a compound containing protons or carbon-13 placed under very strong magnetic field and treated with electromagnetic energy radiation of suitable frequency, the nuclei of the compound absorbs energy through a process called magnetic resonance.

Nuclear magnetic resonance spectroscopy is a graph showing characteristic energy absorption frequencies and intensities of a compound under magnetic field.

When each of two hydrogens are replaced by a same group, then the compounds formed are enantiomers and the hydrogens are called enantiotopic hydrogens. Significance of enantiotopic hydrogens is that they give only one signal in 1HNMR

When each of two hydrogens are replaced by a same group, then the compounds formed are diastereomers and the hydrogens are called diastereotopic hydrogens. Diastereotopic hydrogens give us two different signals in 1HNMR

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Chapter 9 Solutions

Organic Chemistry

Ch. 9 - PRACTICE PROBLEM 9.10 What is the dihedral angle...Ch. 9 - PRACTICE PROBLEM 9.11 Draw the most stable chair...Ch. 9 - Prob. 13PPCh. 9 - Prob. 14PPCh. 9 - PRACTICE PROBLEM 9.13 How many signals would you...Ch. 9 - Prob. 16PPCh. 9 - Prob. 17PPCh. 9 - Prob. 18PPCh. 9 - Prob. 19PPCh. 9 - PRACTICE PROBLEM 9.18 What are the expected ratios...Ch. 9 - Given the mass spectrum in Figure 9.44 and the...Ch. 9 - Prob. 22PCh. 9 - 9.23 How many 13C NMR signals would you predict...Ch. 9 - Prob. 24PCh. 9 - 9.25 Propose structures for the compounds G and H...Ch. 9 - Prob. 26PCh. 9 - Prob. 27PCh. 9 - Compound Q has the molecular formula C7H8. The...Ch. 9 - 9.26 Explain in detail how you would distinguish...Ch. 9 - Prob. 30PCh. 9 - A compound with molecular formula C4H8O has a...Ch. 9 - In the mass spectrum of 2, 6-dimethyl-4-heptanol...Ch. 9 - Prob. 33PCh. 9 - What are the masses and structures of the ions...Ch. 9 - Prob. 35PCh. 9 - Ethyl bromide and methoxybenzene (shown below)...Ch. 9 - 9.34 The homologous series of primary amines, ,...Ch. 9 - Propose a structure that is consistent with each...Ch. 9 - 9.39 Propose structures for compounds E and F....Ch. 9 - Regarding compound J, C2HxCly, use the 1H NMR and...Ch. 9 - 9.38 When dissolved in , a compound (K) with the...Ch. 9 - Compound T (C5H8O) has a strong IR absorption band...Ch. 9 - Deduce the structure of the compound that gives...Ch. 9 - 9.45 Deduce the structure of the compound that...Ch. 9 - The 1H NMR spectrum of a solution of 1,...Ch. 9 - Acetic acid has a mass spectrum showing a...Ch. 9 - The 1H NMR peak for the hydroxyl proton of...Ch. 9 - The 1H NMR study of DMF (N, N-dimethylformamide)...Ch. 9 - 9.48 The mass spectra of many benzene derivatives...Ch. 9 - Prob. 52PCh. 9 - 1. Given the following information, elucidate the...Ch. 9 - Two compounds with the molecular formula C5H10O...Ch. 9 - Propose a structure that is consistent with each...Ch. 9 - 9.2 How many 1H NMR signals would the following...Ch. 9 - 9.3. How many 1H NMR signals would...Ch. 9 - 9.4 Which of these C6H14 isomers has the greatest...Ch. 9 - 9.5 How many 13C NMR signals would be given by the...Ch. 9 - Prob. 6QCh. 9 - 9.7 What is the structure of a compound C5H12...
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