Solved: Determine the ratios of the peak areas in the following spectra. Then use this

Problem 13-6

Determine the ratios of the peak areas in the following spectra. Then use this information, together with the chemical shifts, to pair up the compounds with their spectra. Assign the peaks in each spectrum to the protons they represent in the molecular structure. Possible structures:

                                                              Step by Step Solution

Step 1 of 3

a)

The compound which corresponds to the spectrum of the given compound is

The above spectrum's NMR values verified that the following compound is suitable.

The compound with the molecular formula  has an integrated spectrum. The integral trace can be used to calculate how many protons are responsible for each peak using the molecular formula. In integrating the 8 protons in the molecule, the integrator has transferred a total of 8.0 spaces vertically.

Hence, each proton is represented by as follows;

Observing the integration spectrum of the above compound   has an integral of 1.0 space, representing one hydrogen,  has an integral of 1.0 space, representing one hydrogen, and  has an integral of six spaces, representing six hydrogens.

There are three signals in the  spectrum. Hence, three types of protons are present in the given compound.

____________________________________________________________________________