I have a question on this part can ethyl acetate show an ir spectrum on around 3400cm-1? Am just asking coz am confused u guys say it is carbonyl overtone which here is ester . so isnt ester show ir spectra around 1700cm-1 am confused thank u
I have a question on this part can ethyl acetate show an ir spectrum on around 3400cm-1? Am just asking coz am confused u guys say it is carbonyl overtone which here is ester . so isnt ester show ir spectra around 1700cm-1 am confused thank u
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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I have a question on this part can ethyl acetate show an ir spectrum on around 3400cm-1? Am just asking coz am confused u guys say it is carbonyl overtone which here is ester . so isnt ester show ir spectra around 1700cm-1 am confused thank u

Transcribed Image Text:### Step 2: IR Analysis
- **Strong and Sharp Peaks (2990-2840 cm<sup>-1</sup>)**: This range, with a noted peak at 2908.57 cm<sup>-1</sup>, indicates C-H stretching of sp<sup>3</sup> carbon (CH, CH<sub>2</sub>, or CH<sub>3</sub> units).
- **Strong and Narrow Peak (1760 cm<sup>-1</sup>)**: Indicates C=O stretching frequency, associated with the ester functional group.
- **Strong and Narrow Peaks (1400-1500 cm<sup>-1</sup>)**: These peaks suggest C-H bending of sp<sup>3</sup> carbon (CH, CH<sub>2</sub>, or CH<sub>3</sub> units).
- **Peaks (1000-1200 cm<sup>-1</sup>)**: With a mentioned peak at 1160.5 cm<sup>-1</sup>, these indicate C-O stretching frequency.
- **Strong and Sharp Peaks (800-950 cm<sup>-1</sup>)**: These indicate C-H deformations.
- **Sharp and Medium Peak (around 3400 cm<sup>-1</sup>)**: This peak indicates overtones of the carbonyl functional group, specifically here for an ester.
Expert Solution
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Step 1
Overtone is the multiple of fundamental band. In case of carbonyl fundamental band (1700cm-1) the value of overtone will came at 3400cm-1. This can be confirmed by labelling O16 to O18. If shit in value of overtone occur will characterise it as overtone.
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