Homework Help is Here – Start Your Trial Now!
Science
Chemistry
% transmittance aldehyde 4000 10 9.0 3500 8.0 CH (sp³) 3000 7.0 O=C-H Molecule 20 2500 2000 wavenumber (cm-¹) 6.0 5.0 8 (ppm) 4.0 1500 3.0 1 (sextet) 4 (quintet) الله 1000 2.0 6 1.0 500 0.0

% transmittance aldehyde 4000 10 9.0 3500 8.0 CH (sp³) 3000 7.0 O=C-H Molecule 20 2500 2000 wavenumber (cm-¹) 6.0 5.0 8 (ppm) 4.0 1500 3.0 1 (sextet) 4 (quintet) الله 1000 2.0 6 1.0 500 0.0

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

Please what molecule is this

### Infrared (IR) and NMR Spectrum Analysis of Molecule 20 #### IR Spectrum Analysis The upper graph presents the IR spectrum for Molecule 20, charting % transmittance against wavenumber (cm⁻¹). Key features include: - **Aldehyde Group:** An absorption peak is located around the 2700-2900 cm⁻¹ region, indicating the presence of an aldehyde group. - **C-H (sp³):** The peak around 3000 cm⁻¹ is attributed to sp³ hybridized C-H stretching vibrations. - **Carbonyl Group:** A sharp, prominent peak around 1700 cm⁻¹, characteristic of a carbonyl (C=O) stretch. #### NMR Spectrum Analysis The lower graph shows the Proton NMR spectrum for Molecule 20, with the chemical shift (δ) in ppm shown on the x-axis and relative peak intensity on the y-axis. Key features include: - **Downfield Signal:** A single proton signal at approximately 10 ppm, indicating a deshielded hydrogen, likely from an aldehyde group. - **Complex Multiplets:** - Around 2.5 ppm: A quintet peak indicating the presence of a proton in a complex environment with coupling. - Around 3.5 ppm: A sextet suggesting interactions of one proton with multiple neighboring protons. - **Upfield Signal:** A strong peak at approximately 1 ppm, likely representing protons in a more shielded environment, such as those in alkyl groups. This analysis aids in identifying the functional groups and understanding the molecular structure of Molecule 20. For further details and the complete chemical shift assignments, consult the full dataset or supplementary material provided by the instructor.
Transcribed Image Text:### Infrared (IR) and NMR Spectrum Analysis of Molecule 20 #### IR Spectrum Analysis The upper graph presents the IR spectrum for Molecule 20, charting % transmittance against wavenumber (cm⁻¹). Key features include: - **Aldehyde Group:** An absorption peak is located around the 2700-2900 cm⁻¹ region, indicating the presence of an aldehyde group. - **C-H (sp³):** The peak around 3000 cm⁻¹ is attributed to sp³ hybridized C-H stretching vibrations. - **Carbonyl Group:** A sharp, prominent peak around 1700 cm⁻¹, characteristic of a carbonyl (C=O) stretch. #### NMR Spectrum Analysis The lower graph shows the Proton NMR spectrum for Molecule 20, with the chemical shift (δ) in ppm shown on the x-axis and relative peak intensity on the y-axis. Key features include: - **Downfield Signal:** A single proton signal at approximately 10 ppm, indicating a deshielded hydrogen, likely from an aldehyde group. - **Complex Multiplets:** - Around 2.5 ppm: A quintet peak indicating the presence of a proton in a complex environment with coupling. - Around 3.5 ppm: A sextet suggesting interactions of one proton with multiple neighboring protons. - **Upfield Signal:** A strong peak at approximately 1 ppm, likely representing protons in a more shielded environment, such as those in alkyl groups. This analysis aids in identifying the functional groups and understanding the molecular structure of Molecule 20. For further details and the complete chemical shift assignments, consult the full dataset or supplementary material provided by the instructor.
Expert Solution
Step 1: Introduce question

The question is based on the concept of organic spectroscopy.  We need to analyse the spectral data and identify the compound.

steps

Step by step

Solved in 3 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Techniques and Applications of Quantum Theory
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