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Draw the structure:

Draw the 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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Draw the structure:

 

The image shows a proton nuclear magnetic resonance (^1H NMR) spectrum with chemical shifts displayed in parts per million (ppm) on the x-axis, ranging from 0 to 3 ppm. The y-axis represents the intensity of the signals. The spectrum features the following key peaks: 1. **Quartet** at approximately 1.2 ppm: - This peak is labeled with the number (2), indicating a coupling pattern that corresponds to a quartet. It suggests the presence of hydrogen atoms that are adjacent to a group of three equivalent hydrogens. 2. **Triplet** at around 0.9 ppm: - Labeled with the number (3), this peak exhibits a triplet pattern, indicating a coupling with two adjacent hydrogens. 3. **Singlet** at about 1.4 ppm: - This is the central peak in the spectrum labeled (9) with a singlet pattern, which indicates that the corresponding hydrogen atoms are not coupled with any adjacent hydrogens. These peaks provide insight into the molecular structure, revealing the different environments of hydrogen atoms in a compound. The integration values, indicated by the numbers in parentheses, help deduce the relative number of protons represented by each peak.
Transcribed Image Text:The image shows a proton nuclear magnetic resonance (^1H NMR) spectrum with chemical shifts displayed in parts per million (ppm) on the x-axis, ranging from 0 to 3 ppm. The y-axis represents the intensity of the signals. The spectrum features the following key peaks: 1. **Quartet** at approximately 1.2 ppm: - This peak is labeled with the number (2), indicating a coupling pattern that corresponds to a quartet. It suggests the presence of hydrogen atoms that are adjacent to a group of three equivalent hydrogens. 2. **Triplet** at around 0.9 ppm: - Labeled with the number (3), this peak exhibits a triplet pattern, indicating a coupling with two adjacent hydrogens. 3. **Singlet** at about 1.4 ppm: - This is the central peak in the spectrum labeled (9) with a singlet pattern, which indicates that the corresponding hydrogen atoms are not coupled with any adjacent hydrogens. These peaks provide insight into the molecular structure, revealing the different environments of hydrogen atoms in a compound. The integration values, indicated by the numbers in parentheses, help deduce the relative number of protons represented by each peak.
**Transcription and Explanation of the Proton Nuclear Magnetic Resonance (^1H NMR) Spectrum** **Title: Understanding ^1H NMR Spectrum** The image displays a ^1H NMR spectrum with the x-axis labeled as "chemical shift (ppm)" ranging from 0 to 4 ppm. This spectrum illustrates various peaks that indicate the presence of different types of hydrogen environments in a molecule. Here's a detailed explanation of each feature in the spectrum: 1. **Peak at approximately 3.6 ppm**: - **Label**: (2) doublet - **Description**: This peak is split into a doublet, indicating the presence of two neighboring, equivalent protons. The splitting pattern helps to determine the chemical environment of the hydrogen nuclei. 2. **Peak at approximately 2.6 ppm**: - **Label**: (2) quartet - **Description**: This peak is represented as a quartet, suggesting interaction with three neighboring protons, typically seen in an alkyl group environment. 3. **Peak at approximately 2.2 ppm**: - **Label**: (1) multiplet - **Description**: The multiplet indicates a more complex splitting pattern due to coupling with multiple neighboring protons, suggesting a more intricate chemical environment. 4. **Peak at around 1.3 ppm**: - **Label**: (3) triplet - **Description**: This triplet indicates coupling with two neighboring protons, often seen in primary alkyl groups. 5. **Peak at around 0.9 ppm**: - **Label**: (6) doublet - **Description**: Similar to the peak at 3.6 ppm, this doublet indicates coupling with one neighboring group of equivalent protons. **Overall Interpretation**: The ^1H NMR spectrum provides insights into the number and types of hydrogen environments present in a compound. Each labeled peak denotes specific splitting patterns which are essential for elucidating the structure of the molecule. Understanding these shifts and patterns assists chemists in identifying the molecular framework and functional groups present.
Transcribed Image Text:**Transcription and Explanation of the Proton Nuclear Magnetic Resonance (^1H NMR) Spectrum** **Title: Understanding ^1H NMR Spectrum** The image displays a ^1H NMR spectrum with the x-axis labeled as "chemical shift (ppm)" ranging from 0 to 4 ppm. This spectrum illustrates various peaks that indicate the presence of different types of hydrogen environments in a molecule. Here's a detailed explanation of each feature in the spectrum: 1. **Peak at approximately 3.6 ppm**: - **Label**: (2) doublet - **Description**: This peak is split into a doublet, indicating the presence of two neighboring, equivalent protons. The splitting pattern helps to determine the chemical environment of the hydrogen nuclei. 2. **Peak at approximately 2.6 ppm**: - **Label**: (2) quartet - **Description**: This peak is represented as a quartet, suggesting interaction with three neighboring protons, typically seen in an alkyl group environment. 3. **Peak at approximately 2.2 ppm**: - **Label**: (1) multiplet - **Description**: The multiplet indicates a more complex splitting pattern due to coupling with multiple neighboring protons, suggesting a more intricate chemical environment. 4. **Peak at around 1.3 ppm**: - **Label**: (3) triplet - **Description**: This triplet indicates coupling with two neighboring protons, often seen in primary alkyl groups. 5. **Peak at around 0.9 ppm**: - **Label**: (6) doublet - **Description**: Similar to the peak at 3.6 ppm, this doublet indicates coupling with one neighboring group of equivalent protons. **Overall Interpretation**: The ^1H NMR spectrum provides insights into the number and types of hydrogen environments present in a compound. Each labeled peak denotes specific splitting patterns which are essential for elucidating the structure of the molecule. Understanding these shifts and patterns assists chemists in identifying the molecular framework and functional groups present.
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