Which molecule best fits the NMR spectrum?

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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Which molecule best fits the NMR spectrum?

**Section 13.19: Identifying the Molecule from the NMR Spectrum**

**Objective:**
Determine which molecule best corresponds to the provided NMR spectrum.

**Given Information:**
The NMR spectrum represents the compound with the molecular formula **C₄H₈O₂**.

**NMR Spectrum Analysis:**
- The spectrum contains a single peak at approximately 3.8 ppm.

**Options for Molecular Structures:**

a. A six-membered ring with two oxygen atoms.

b. A four-membered ring with two hydroxyl (OH) groups, each on a different carbon atom.

c. A four-membered ring with two hydroxyl (OH) groups on the same carbon atom.

d. A three-membered ring with two hydroxyl (OH) groups, each on different carbon atoms.

e. A three-membered ring with two hydroxyl (OH) groups on the same carbon atom.

**Analysis:**
The chemical shift observed in the NMR spectrum at 3.8 ppm suggests the presence of a chemical environment typical for functional groups such as ethers or esters. Consider the structure and functional groups present in each option to identify which molecule best fits this spectral data.
Transcribed Image Text:**Section 13.19: Identifying the Molecule from the NMR Spectrum** **Objective:** Determine which molecule best corresponds to the provided NMR spectrum. **Given Information:** The NMR spectrum represents the compound with the molecular formula **C₄H₈O₂**. **NMR Spectrum Analysis:** - The spectrum contains a single peak at approximately 3.8 ppm. **Options for Molecular Structures:** a. A six-membered ring with two oxygen atoms. b. A four-membered ring with two hydroxyl (OH) groups, each on a different carbon atom. c. A four-membered ring with two hydroxyl (OH) groups on the same carbon atom. d. A three-membered ring with two hydroxyl (OH) groups, each on different carbon atoms. e. A three-membered ring with two hydroxyl (OH) groups on the same carbon atom. **Analysis:** The chemical shift observed in the NMR spectrum at 3.8 ppm suggests the presence of a chemical environment typical for functional groups such as ethers or esters. Consider the structure and functional groups present in each option to identify which molecule best fits this spectral data.
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A question based on NMR spectrum. A multiple choice having structure of 5 organic compounds and a HNMR spectrum are prescribed. The exact structure that would match with the given HNMR spectrum is to be answered.

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