
Concept explainers
What are the major IR absorptions in the
a. d.
b.
c. e.
capsaicin
(spicy component of hot peppers)

(a)
Interpretation: The major IR absorptions in the functional group region for the given compound are to be predicted.
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.18P
The major IR absorption peaks are observed for
Explanation of Solution
The given compound is octane. It contains
The major IR absorption peaks are observed for

(b)
Interpretation: The major IR absorptions in the functional group region for the given compound are to be predicted.
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.18P
The major IR absorptions are observed for
Explanation of Solution
The given compound is cyclohexanol. It contains
The major IR absorptions are observed for

(c)
Interpretation: The major IR absorptions in the functional group region for the given compound are to be predicted.
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.18P
The major IR absorptions are observed for
Explanation of Solution
The given compound is hept-3-ene. It contains
The major IR absorptions are observed for

(d)
Interpretation: The major IR absorptions in the functional group region for the given compound are to be predicted.
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.18P
The major IR absorptions are observed for
Explanation of Solution
The given compound is cyclohexanone. It contains
The major IR absorptions are observed for

(e)
Interpretation: The major IR absorptions in the functional group region for the given compound are to be predicted.
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency
Answer to Problem 13.18P
The major IR absorptions are observed for
Explanation of Solution
The given compound is capsaicin as shown below.
Figure 1
It contains
The major IR absorptions are observed for
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