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The 1H NMR of a compound with molecular formula C5H7BrO is shown. Determine its structure.

The 1H NMR of a compound with molecular formula C5H7BrO is shown. Determine its structure.

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The 1H NMR of a compound with molecular formula C5H7BrO is shown. Determine its structure.
This image is an NMR (Nuclear Magnetic Resonance) spectrum. The x-axis represents the chemical shift in parts per million (ppm), while the y-axis displays the intensity of the NMR signals. The spectrum features several peaks indicative of different proton environments: 1. **7.0-7.2 ppm:** This area has two close peaks with a label "d of t" (doublet of triplets) and another labeled "d" (doublet). Such patterns usually suggest aromatic protons. 2. **6.5-7.0 ppm:** A single peak labeled "d" indicates a doublet, which might suggest another aromatic proton. 3. **4.0-4.3 ppm:** This peak is labeled "d" and indicates a doublet, possibly representing a proton adjacent to an electronegative atom. 4. **3.0 ppm:** A large peak labeled "S" indicates a singlet, which could represent a methyl group not adjacent to other hydrogen atoms. Each signal provides information about the chemical structure and environment of hydrogen atoms within the molecule, helping in identifying and characterizing the compound under study.
Transcribed Image Text:This image is an NMR (Nuclear Magnetic Resonance) spectrum. The x-axis represents the chemical shift in parts per million (ppm), while the y-axis displays the intensity of the NMR signals. The spectrum features several peaks indicative of different proton environments: 1. **7.0-7.2 ppm:** This area has two close peaks with a label "d of t" (doublet of triplets) and another labeled "d" (doublet). Such patterns usually suggest aromatic protons. 2. **6.5-7.0 ppm:** A single peak labeled "d" indicates a doublet, which might suggest another aromatic proton. 3. **4.0-4.3 ppm:** This peak is labeled "d" and indicates a doublet, possibly representing a proton adjacent to an electronegative atom. 4. **3.0 ppm:** A large peak labeled "S" indicates a singlet, which could represent a methyl group not adjacent to other hydrogen atoms. Each signal provides information about the chemical structure and environment of hydrogen atoms within the molecule, helping in identifying and characterizing the compound under study.
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