N Label C atoms on this structure Carbon Approximate/calculated chemical shift (ppm)

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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### Analyzing the Structure and NMR Data of the Compound

The image presents a chemical structure that appears to be a derivative of an aromatic compound. This structure needs to be analyzed to assign carbon atoms and their respective chemical shifts.

#### Chemical Structure
- **Description**: The structure includes a benzene ring with an attached carbonyl group (C=O) and an N-methyl group (N-CH₃). This is likely a lactam compound, such as an amide or derivative thereof.

#### Task: Label Carbon Atoms
- **Objective**: Identify and label each carbon atom within the molecule for analysis.

#### NMR Data Table
The table below is designed to record the approximate or calculated chemical shift values for each labeled carbon atom:

| Carbon | Approximate/calculated chemical shift (ppm) |
|--------|---------------------------------------------|
|        |                                             |
|        |                                             |
|        |                                             |
|        |                                             |
|        |                                             |
|        |                                             |
|        |                                             |

#### Instructions
- **Assignment**: Label each carbon atom on the structure.
- **Chemical Shift Calculation**: Determine the approximate or calculated chemical shift for each carbon atom using NMR spectroscopy principles. Fill in the table with these values expressed in parts per million (ppm).

This exercise aids in building an understanding of chemical structures and their analysis via NMR spectroscopy, a crucial technique in organic chemistry.
Transcribed Image Text:### Analyzing the Structure and NMR Data of the Compound The image presents a chemical structure that appears to be a derivative of an aromatic compound. This structure needs to be analyzed to assign carbon atoms and their respective chemical shifts. #### Chemical Structure - **Description**: The structure includes a benzene ring with an attached carbonyl group (C=O) and an N-methyl group (N-CH₃). This is likely a lactam compound, such as an amide or derivative thereof. #### Task: Label Carbon Atoms - **Objective**: Identify and label each carbon atom within the molecule for analysis. #### NMR Data Table The table below is designed to record the approximate or calculated chemical shift values for each labeled carbon atom: | Carbon | Approximate/calculated chemical shift (ppm) | |--------|---------------------------------------------| | | | | | | | | | | | | | | | | | | | | | #### Instructions - **Assignment**: Label each carbon atom on the structure. - **Chemical Shift Calculation**: Determine the approximate or calculated chemical shift for each carbon atom using NMR spectroscopy principles. Fill in the table with these values expressed in parts per million (ppm). This exercise aids in building an understanding of chemical structures and their analysis via NMR spectroscopy, a crucial technique in organic chemistry.
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