Identify the major absorbances, directly on the spectra A1 coupledMelting point 149-152 °CIR9590858075350030002500200015001000Wavenumbers (cm-1)% Transmittance2040703333.572959.132840.021672.271598.421494.871579.434527.1462.301441.181425.901400.37L1358.641311.651292,48t1244.721169.591137.801031.141010.76998.60958.11814.08753.36712.06691.1770 6E9

IR Spectroscopy is used to identify the functional groups by different wavenumber. As different peaks represents different wavenumber corresponding to different functional groups. IR Spectroscopy is also used to differentiate between two organic compound having different functional groups.Wavenumber (cm-1) Bond type Functional group 3333.57 O-H stretch Alcohol may be present 2959.13 C-H stretch Alkane may be 1672.27 C=O stretch Carbonyl may be present 1244.72 C-O stretch Ether may be present

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Identify the major absorbances, directly on the spectra

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter25: Instruments For Optical Spectrometry

Section: Chapter Questions

Problem 25.20QAP

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Concept explainers

Analyzing and Predicting Spectroscopic Data

The interaction of electromagnetic radiation with the structure of molecules in the sample and their study is referred spectroscopy. Several spectroscopic methods are used to acquire sample information, and these methods are proved to be accurate, fast, and non-destructive. The information obtained about the content and composition of molecules from these spectroscopic methods is called spectroscopic data.

Question

Identify the major absorbances, directly on the spectra

A1 coupled
Melting point 149-152 °C
IR
95
90
85
80
75
3500
3000
2500
2000
1500
1000
Wavenumbers (cm-1)
% Transmittance
20
40
70
3333.57
2959.13
2840.02
1672.27
1598.42
1494.87
1579.43
4527.
1462.30
1441.18
1425.90
1400.37L
1358.64
1311.65
1292,48t
1244.72
1169.59
1137.80
1031.14
1010.76
998.60
958.11
814.08
753.36
712.06
691.17
70 6E9

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