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Shown below are carbon NMR spectra for various isomers of C5H11Br. Assign structures for the compound that would produce each spectrum.

Shown below are carbon NMR spectra for various isomers of C5H11Br. Assign structures for the compound that would produce each spectrum.

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
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Shown below are carbon NMR spectra for various isomers of C5H11Br. Assign structures for the compound that would produce each spectrum. 

The image shows four separate NMR (Nuclear Magnetic Resonance) spectra, labeled according to various chemical groups: 1. **Top Spectrum:** - Peaks correspond to different CH\(_2\) and CH\(_3\) groups. - Chemical shifts (δ) are indicated in parts per million (ppm) on the x-axis ranging from 70 to 0. - Starting from the lower ppm region, there are peaks assigned to: - CH\(_3\) - CH\(_2\) - Multiple closely spaced CH\(_2\) groups, with an arrow pointing to one of the peaks. 2. **Second Spectrum:** - Displays peaks for CH, CH\(_2\), and CH\(_3\) groups. - The x-axis is similar, measuring chemical shifts in ppm. - Peaks are labeled, starting from left: CH\(_2\), CH, CH\(_2\), CH\(_3\). 3. **Third Spectrum:** - Shows peaks corresponding to carbon (C) and other groups, including CH\(_2\) and CH\(_3\). - Chemical shifts are labeled along the x-axis. - Peaks are assigned to C, CH\(_2\), and two CH\(_3\) groups. 4. **Bottom Spectrum:** - Includes labels for CH, CH\(_2\), and CH\(_3\) groups. - Chemical shift values are consistent along the x-axis. - Peaks appear for CH, CH\(_2\), and CH\(_3\), moving from left to right. These spectra illustrate various chemical environments based on atomic structure, identified by the differences in chemical shifts.
Transcribed Image Text:The image shows four separate NMR (Nuclear Magnetic Resonance) spectra, labeled according to various chemical groups: 1. **Top Spectrum:** - Peaks correspond to different CH\(_2\) and CH\(_3\) groups. - Chemical shifts (δ) are indicated in parts per million (ppm) on the x-axis ranging from 70 to 0. - Starting from the lower ppm region, there are peaks assigned to: - CH\(_3\) - CH\(_2\) - Multiple closely spaced CH\(_2\) groups, with an arrow pointing to one of the peaks. 2. **Second Spectrum:** - Displays peaks for CH, CH\(_2\), and CH\(_3\) groups. - The x-axis is similar, measuring chemical shifts in ppm. - Peaks are labeled, starting from left: CH\(_2\), CH, CH\(_2\), CH\(_3\). 3. **Third Spectrum:** - Shows peaks corresponding to carbon (C) and other groups, including CH\(_2\) and CH\(_3\). - Chemical shifts are labeled along the x-axis. - Peaks are assigned to C, CH\(_2\), and two CH\(_3\) groups. 4. **Bottom Spectrum:** - Includes labels for CH, CH\(_2\), and CH\(_3\) groups. - Chemical shift values are consistent along the x-axis. - Peaks appear for CH, CH\(_2\), and CH\(_3\), moving from left to right. These spectra illustrate various chemical environments based on atomic structure, identified by the differences in chemical shifts.
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Carbon NMR spectra for various isomers of C5H11Br

 we need to predict the structure on basis of the spectra.

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