Concept explainers
(a) How many
signals does each of the following compounds exhibit?

(a)
Interpretation: The number of
Concept introduction: The number of NMR signal in a compound is equal to the number of chemically non-equivalent protons present in that compound. In
Answer to Problem 36P
The given compound A gives four signals and compound B gives five signals in
Explanation of Solution
The given compound A is the ball and stick model of
Figure 1
There are four non-equivalent protons
The given compound B is the ball and stick model of propyl butyrate. The bond-line representation of the compound B with all chemically non-equivalent protons is shown below.
Figure 2
There are five non-equivalent protons
The given compound A gives four signals and compound B gives five signals in

(b)
Interpretation: The number of
Concept introduction: The number of NMR signal in a compound is equal to the number of carbon atoms present in that compound. In
Answer to Problem 36P
The given compound A gives five signals and compound B gives six signals in
Explanation of Solution
The given compound A is the ball and stick model of
Figure 3
There are five non-equivalent carbon atoms
The given compound B is the ball and stick model of propyl butyrate. The bond-line representation of the compound B with all chemically non-equivalent carbon atoms is shown below.
Figure 4
There are six non-equivalent carbon atoms
The given compound A gives five signals and compound B gives six signals in
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