Chapter 14.14, Problem 16P

Interpretation Introduction

Interpretation:

The number of signals expected in the ${}^{\text{13}}\text{C NMR}$ spectrum of each of the given compounds is to be determined.

Concept Introduction:

In ${}^{\text{13}}\text{C NMR}$ spectrum, a separate peak is observed for each carbon atom.

Carbon atoms having equivalent environment will have the same chemical shift.

In simple molecules, equivalent carbon atoms can be identified just by inspection.

The number of signals depends on the number of distinct carbon atoms in the structure of the compound.

If the structure is symmetrical, the number of signals in the ${}^{\text{13}}\text{C NMR}$ spectrum will be less than the total number of carbon atoms in the structure of the compound.