Chapter 17, Problem 17.53P

How many ${}^{13}\text{C}\text{NMR}$ signals does each compound exhibit?

a. b. c. d.

Interpretation Introduction

(a)

Interpretation: The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is to be predicted.

Concept introduction: The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

Answer to Problem 17.53P

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is five.

Explanation of Solution

The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

The given compound contains five different types of carbon atoms as follows.

Figure 1

Thus, the number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is five.

Conclusion

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is five.

Interpretation Introduction

(b)

Interpretation: The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is to be predicted.

Concept introduction: The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

Answer to Problem 17.53P

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is nine.

Explanation of Solution

The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

The given compound contains nine different types of carbon atoms as follows.

Figure 2

Thus, the number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is nine.

Conclusion

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is nine.

Interpretation Introduction

(c)

Interpretation: The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is to be predicted.

Concept introduction: The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

Answer to Problem 17.53P

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is three.

Explanation of Solution

The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

The given compound contains three different types of carbon atoms as follows.

Figure 3

Thus, the number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is three.

Conclusion

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is three.

Interpretation Introduction

(d)

Interpretation: The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is to be predicted.

Concept introduction: The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

Answer to Problem 17.53P

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is four.

Explanation of Solution

The ${}^{13}\text{C}\text{NMR}$ spectroscopy is an important tool for the elucidation of organic structures of molecules. The physical basis for it is same as for ${}^1\text{H}\text{NMR}$. ${}^{13}\text{C}\text{NMR}$ spectrum is comparatively easier to analyze than ${}^1\text{H}\text{NMR}$. Each type of carbon atom appears as one signal in ${}^{\text{13}}\text{C}\text{NMR}$ spectrum.

The given compound contains four different types of carbon atoms as follows.

Figure 4

Thus, the number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is four.

Conclusion

The number of ${}^{13}\text{C}\text{NMR}$ signals exhibited by the given compound is four.