### NMR Analysis ExamplesThe image contains two diagrams labeled "c)" and "d)" that illustrate the \( ^1H \) NMR (nuclear magnetic resonance) analysis of two different organic molecules. #### Diagram c)- **Structure:** - The molecule depicted is a substituted benzene ring with two \(-CH_3\) groups. - **Analysis Boxes:** - Three sets of empty boxes are shown with the labels "splitting:" and "integration:" indicating different hydrogen environments. - Each box points to a specific hydrogen (H) in the molecule, labeled as follows: - One set of boxes points to one of the hydrogens in the \(-CH_3\) group. - Another set points to a hydrogen on the benzene ring. - The third set points to a different hydrogen on the benzene ring. - **Signal Box:** - An additional box labeled \( ^1H \) NMR signals is displayed, intended to collect all data regarding the proton signals in the spectrum, such as their chemical shifts.#### Diagram d)- **Structure:** - The molecule depicted consists of a benzene ring, a methoxy (\(-OCH_3\)) group, and additional hydrogen atoms attached to various positions. - **Analysis Boxes:** - Five sets of empty boxes are included, each labeled with "splitting:" and "integration:". - These boxes are connected to specific hydrogen atoms throughout the molecule, as follows: - One set of boxes points to the hydrogen in the methoxy group (\(-OCH_3\)). - The other sets point to hydrogens on the benzene ring and another group on the structure. - **Signal Box:** - Similar to Diagram c, there is a box labeled \( ^1H \) NMR signals meant to consolidate information regarding the NMR data for protons in this molecule.The diagrams serve as educational tools, inviting learners to fill in the missing data about splitting patterns and integration ratios when analyzing the proton NMR spectra of these molecules.

Answered: Image /qna-images/answer/3315fbca-414c-47f0-b0f0-e8be2fa1a23a.jpg

O splitting: integration: splitting: integration: H H3C CH3 H splitting: integration: splitting: integration: ¹H NMR signals: splitting: integration: splitting: integration: splitting: integration: H H. H splitting: integration: CH3 ¹H NMR signals: H◄ splitting: integration:

O splitting: integration: splitting: integration: H H3C CH3 H splitting: integration: splitting: integration: ¹H NMR signals: splitting: integration: splitting: integration: splitting: integration: H H. H splitting: integration: CH3 ¹H NMR signals: H◄ splitting: integration:

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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Question

### NMR Analysis Examples

The image contains two diagrams labeled "c)" and "d)" that illustrate the \( ^1H \) NMR (nuclear magnetic resonance) analysis of two different organic molecules.

#### Diagram c)

- **Structure:**
- The molecule depicted is a substituted benzene ring with two \(-CH_3\) groups.

- **Analysis Boxes:**
- Three sets of empty boxes are shown with the labels "splitting:" and "integration:" indicating different hydrogen environments.
- Each box points to a specific hydrogen (H) in the molecule, labeled as follows:
- One set of boxes points to one of the hydrogens in the \(-CH_3\) group.
- Another set points to a hydrogen on the benzene ring.
- The third set points to a different hydrogen on the benzene ring.

- **Signal Box:**
- An additional box labeled \( ^1H \) NMR signals is displayed, intended to collect all data regarding the proton signals in the spectrum, such as their chemical shifts.

#### Diagram d)

- **Structure:**
- The molecule depicted consists of a benzene ring, a methoxy (\(-OCH_3\)) group, and additional hydrogen atoms attached to various positions.

- **Analysis Boxes:**
- Five sets of empty boxes are included, each labeled with "splitting:" and "integration:".
- These boxes are connected to specific hydrogen atoms throughout the molecule, as follows:
- One set of boxes points to the hydrogen in the methoxy group (\(-OCH_3\)).
- The other sets point to hydrogens on the benzene ring and another group on the structure.

- **Signal Box:**
- Similar to Diagram c, there is a box labeled \( ^1H \) NMR signals meant to consolidate information regarding the NMR data for protons in this molecule.

The diagrams serve as educational tools, inviting learners to fill in the missing data about splitting patterns and integration ratios when analyzing the proton NMR spectra of these molecules.

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