Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
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Chapter 13, Problem 13.43SP
Interpretation Introduction
Interpretation:
The structure of the given NMR spectrum is to be shown and the appropriate peaks for the protons in the structure is to be assigned.
Concept introduction:
NMR spectroscopy is a technique used to determine a unique structure of the compounds. It identifies the carbon-hydrogen bonding of an organic compound. A hydrogen atom is called as a proton in the NMR spectroscopy.
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The IR and 1H-NMR spectra of a compound with molecular formula C4H7ClO2 are shown below. Your objective as a group is to propose a structure for this compound, explaining how you reach your decision. Using all the information you have been given, in a post with others in your group share your initial ideas about the possible structure of the compound. Then use comments to interact with the other students in the group and propose a final answer to the problem. In the comment phase, you should comment on the postings of at least two other students.
Analyze the ¹H NMR spectrum of methyl crotonate. Use the integrations, splitting patterns, and chemical shifts to assign the
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© University of Michigan
Answer Bank
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Dr. N. M. Arr was called in to help analyze the 1H NMR spectrum of a mixture of compounds known to contain only C, H, and Br. The mixture showed two singlets—one at 1.8 ppm and the other at 2.7 ppm—with relative integrals of 1 : 6, respectively. Dr. Arr determined that the spectrum was that of a mixture of bromomethane and 2-bromo-2-methylpropane. What was the ratio of bromomethane to 2-bromo-2-methylpropane in the mixture?
Chapter 13 Solutions
Organic Chemistry (9th Edition)
Ch. 13.5A - In a 300-MHz spectrometer, the protons in...Ch. 13.5B - Prob. 13.2PCh. 13.6 - Determine the number of different kinds of protons...Ch. 13.6 - Prob. 13.4PCh. 13.7 - Draw the integral trace expected for the NMR...Ch. 13.7 - Prob. 13.6PCh. 13.8C - Draw the NMR spectra you would expect for the...Ch. 13.8D - Draw the NMR spectra you expect for the following...Ch. 13.8D - a. Assign protons to the peaks in the NMR spectrum...Ch. 13.8D - Prob. 13.10P
Ch. 13.8D - Two spectra are shown. Propose a structure that...Ch. 13.9 - Prob. 13.12PCh. 13.9 - The spectrum of trans-hex-2-enoic acid follows. a....Ch. 13.9 - Prob. 13.14PCh. 13.9 - Prob. 13.15PCh. 13.10 - Prob. 13.16PCh. 13.10 - If the imaginary replacement of either of two...Ch. 13.10 - Predict the theoretical number of different NMR...Ch. 13.11B - Prob. 13.19PCh. 13.11B - Prob. 13.20PCh. 13.11B - Prob. 13.21PCh. 13.11B - Prob. 13.22PCh. 13.11B - Prob. 13.23PCh. 13.11B - Prob. 13.24PCh. 13.12E - Draw the expected broadband-decoupled 13 C N M R...Ch. 13.12E - a. Show which carbon atoms correspond with which...Ch. 13.12E - Repeat Problem13-25, sketching the...Ch. 13.12F - Prob. 13.28PCh. 13.13 - A bottle of allyl bromide was found to contain a...Ch. 13.13 - A laboratory student was converting cyclohexanol...Ch. 13.14 - Sets of spectra are given for two compounds. For...Ch. 13 - An unknown compound has the molecular formula C 9...Ch. 13 - Prob. 13.34SPCh. 13 - Predict the approximate chemical shifts of the...Ch. 13 - Prob. 13.36SPCh. 13 - Prob. 13.37SPCh. 13 - Prob. 13.38SPCh. 13 - Prob. 13.39SPCh. 13 - Prob. 13.40SPCh. 13 - For each compound shown below. 1. sketch the 13 C...Ch. 13 - Prob. 13.42SPCh. 13 - Prob. 13.43SPCh. 13 - Prob. 13.44SPCh. 13 - Prob. 13.45SPCh. 13 - Prob. 13.46SPCh. 13 - A compound was isolated as a minor constituent in...Ch. 13 - Prob. 13.48SPCh. 13 - The three isomers of dimethylbenzene are commonly...Ch. 13 - a. Draw all six isomers of formula C 4 H 8...Ch. 13 - Prob. 13.51SPCh. 13 - Hexamethylbenzene undergoes free-radical...Ch. 13 - Each of these four structures has molecular...Ch. 13 - Prob. 13.54SPCh. 13 - Phenyl Grignard reagent adds to 2-methylpropanal...Ch. 13 - Prob. 13.56SP
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