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For each molecule below, indicate how many signals you would expect in a 13C NMR. N' 4 6. 7

For each molecule below, indicate how many signals you would expect in a 13C NMR. N' 4 6. 7

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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## Understanding $^{13}$C NMR Signals for Organic Molecules For each molecule below, indicate how many signals you would expect in a $^{13}$C NMR spectrum. ### Molecule 1: This molecule is an alkylamine with two ethyl groups attached to a nitrogen atom. - **Possible Number of Signals** - Options: \[4, 5, 6, 7\] ### Molecule 2: This molecule is a substituted benzene ring with two methyl groups in a para configuration. - **Possible Number of Signals** - Options: \[4, 5, 6, 7\] ### Molecule 3: This molecule is a biphenyl ketone, with two benzene rings connected by a carbonyl group. - **Possible Number of Signals** - Options: \[4, 5, 6, 7\] **Note:** In $^{13}$C NMR spectroscopy, each chemically distinct carbon atom in a molecule will produce a separate signal. Symmetry in the molecule can lead to fewer signals, as identical carbon environments will overlap. To predict the number of signals, carefully consider the symmetry and unique carbon environments in each molecule.
Transcribed Image Text:## Understanding $^{13}$C NMR Signals for Organic Molecules For each molecule below, indicate how many signals you would expect in a $^{13}$C NMR spectrum. ### Molecule 1: This molecule is an alkylamine with two ethyl groups attached to a nitrogen atom. - **Possible Number of Signals** - Options: \[4, 5, 6, 7\] ### Molecule 2: This molecule is a substituted benzene ring with two methyl groups in a para configuration. - **Possible Number of Signals** - Options: \[4, 5, 6, 7\] ### Molecule 3: This molecule is a biphenyl ketone, with two benzene rings connected by a carbonyl group. - **Possible Number of Signals** - Options: \[4, 5, 6, 7\] **Note:** In $^{13}$C NMR spectroscopy, each chemically distinct carbon atom in a molecule will produce a separate signal. Symmetry in the molecule can lead to fewer signals, as identical carbon environments will overlap. To predict the number of signals, carefully consider the symmetry and unique carbon environments in each molecule.
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