Homework Help is Here – Start Your Trial Now!
Science
Chemistry
4. Draw the expected NMR spectrum for the following compound. a.

4. Draw the expected NMR spectrum for the following compound. a.

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...
See similar textbooks
icon
Related questions
Question
100%
**Question 4: NMR Spectrum Analysis** **Task:** Draw the expected NMR spectrum for the following compound. **Compound Structure:** The compound depicted is a two-carbon structure, which appears to be an ether. The structure includes: - A methyl group (-CH₃) attached to an oxygen (O), indicative of an ether linkage. - An ethyl group (-CH₂-CH₃) attached to the oxygen. **Interpreting the NMR Spectrum:** When considering the expected NMR (Nuclear Magnetic Resonance) spectrum for such a compound: 1. **Chemical Shifts:** - The methyl group directly attached to the oxygen may appear as a singlet due to the oxygen's electron-withdrawing effect, centered around 3.2-4.0 ppm. - The methylene group (-CH₂-) might appear as a triplet due to its coupling with the adjacent methyl group. This is expected around 1.0-2.0 ppm. - The terminal methyl group (-CH₃) might appear as a quartet due to the coupling with the adjacent methylene protons, expected around 0.8-1.2 ppm. 2. **Splitting Patterns:** - Each type of hydrogen environment will have a unique splitting pattern: - The -CH₃ group (directly attached to O) usually appears as a singlet. - The -CH₂- group typically appears as a triplet due to the three adjacent protons of the -CH₃ group. - The -CH₃ group (at the end) generally appears as a quartet due to the two adjacent protons of the -CH₂- group. 3. **Integration:** - The integration will reflect the number of hydrogen atoms in each environment: - The methyl group integrals would be three protons each. - The methylene group integral would be two protons. **Conclusion:** This expected NMR spectrum gives insight into the molecular structure based on chemical shift, splitting patterns, and integration, helping elucidate the positions of hydrogen atoms relative to electronegative groups and other hydrogen atoms.
Transcribed Image Text:**Question 4: NMR Spectrum Analysis** **Task:** Draw the expected NMR spectrum for the following compound. **Compound Structure:** The compound depicted is a two-carbon structure, which appears to be an ether. The structure includes: - A methyl group (-CH₃) attached to an oxygen (O), indicative of an ether linkage. - An ethyl group (-CH₂-CH₃) attached to the oxygen. **Interpreting the NMR Spectrum:** When considering the expected NMR (Nuclear Magnetic Resonance) spectrum for such a compound: 1. **Chemical Shifts:** - The methyl group directly attached to the oxygen may appear as a singlet due to the oxygen's electron-withdrawing effect, centered around 3.2-4.0 ppm. - The methylene group (-CH₂-) might appear as a triplet due to its coupling with the adjacent methyl group. This is expected around 1.0-2.0 ppm. - The terminal methyl group (-CH₃) might appear as a quartet due to the coupling with the adjacent methylene protons, expected around 0.8-1.2 ppm. 2. **Splitting Patterns:** - Each type of hydrogen environment will have a unique splitting pattern: - The -CH₃ group (directly attached to O) usually appears as a singlet. - The -CH₂- group typically appears as a triplet due to the three adjacent protons of the -CH₃ group. - The -CH₃ group (at the end) generally appears as a quartet due to the two adjacent protons of the -CH₂- group. 3. **Integration:** - The integration will reflect the number of hydrogen atoms in each environment: - The methyl group integrals would be three protons each. - The methylene group integral would be two protons. **Conclusion:** This expected NMR spectrum gives insight into the molecular structure based on chemical shift, splitting patterns, and integration, helping elucidate the positions of hydrogen atoms relative to electronegative groups and other hydrogen atoms.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
NMR Spectroscopy of Organic Molecules
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS