Chapter 16, Problem 16.59AP

Interpretation Introduction

(a)

Interpretation:

The compound $A$ from its spectroscopic data is to be identified.

Concept introduction:

In mass spectroscopy, compounds can be identified on the basis of mass of compound. When the compound breaks into fragment then they can be distinguished from the other compounds. This technique is also used to differentiate the isotopes of compounds. This technique did not interact with electromagnetic radiation. Two peaks are used to identify the compound, first, the molecular ion peak which is the mass of the compound and second, the base peak which is the most abundant element peak. It may be same or different.

Interpretation Introduction

(b)

Interpretation:

The compound $B$ with molecular formula ${\text{C}}_{\text{10}}{\text{H}}_{\text{12}}\text{O}$ from its spectroscopic data is to be identified.

Concept introduction:

NMR spectroscopy is a technique used to determine a unique structure of the compounds. It identifies the carbon-hydrogen bonding of an organic compound. A hydrogen atom is called as a proton in the NMR spectroscopy.

The number of NMR signal in a compound is equal to the number of chemically non-equivalent protons present in that compound. The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region or vice versa.