tho02 bonelni slas sol aibvox lgma Figure 3. Caffeine structural formula Figure 4. Caffeine Molecular Model Wavenumber/ cm Types of bonds in molecule Notes 110 sidens 100- ST 60 40 3600 3400 32003000 2800 2600 240022002000 1800 1700 16001500 1400 1300 1200 1100 1000 900 B00 700 600 500 400 Wavenunber jan-1 4000 Figure 1'IR Spectrum of Caffeine biew Based on your list of IR absorbances, pick three or four peaks in the diagnostic region (1500-4000 cm) and assign the type of bond based on your table above. Remember that peaks cannot be precisely assigned. Peak (cm) Bond Peak (cm) Bond Peak (cm) Bond Peak (cm) Bond
tho02 bonelni slas sol aibvox lgma Figure 3. Caffeine structural formula Figure 4. Caffeine Molecular Model Wavenumber/ cm Types of bonds in molecule Notes 110 sidens 100- ST 60 40 3600 3400 32003000 2800 2600 240022002000 1800 1700 16001500 1400 1300 1200 1100 1000 900 B00 700 600 500 400 Wavenunber jan-1 4000 Figure 1'IR Spectrum of Caffeine biew Based on your list of IR absorbances, pick three or four peaks in the diagnostic region (1500-4000 cm) and assign the type of bond based on your table above. Remember that peaks cannot be precisely assigned. Peak (cm) Bond Peak (cm) Bond Peak (cm) Bond Peak (cm) Bond
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter16: An Introduction To Infrared Spectrometry
Section: Chapter Questions
Problem 16.16QAP
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