Chapter 14.16, Problem 32ATS

Interpretation Introduction

Interpretation: The HDI of strigol and the molecular formula has to be calculated.

Concept Introduction:

IR spectral studies: It is a spectroscopic technique which is used to determine the functional groups present in the given compound sample by absorbing frequency in particular range with respect to the group present in the given sample.

Wavenumber: It is defined as the number of waves in one centimeter. The wavenumber indicates the location of each signal with respect to the functional group in the molecule and its unit is ${\text{cm}}^{\text{-1}}$.

HDI (Hydrogen deficiency index)

• It is the measure of the degrees of unsaturation.
• For every hydrogen atoms that are missing, the compound is said to have one degree of unsaturation.

The formula used to calculate HDI is given below:

$\begin{array}{l}\text{HDI}\text{=}\frac{\text{1}}{\text{2}}\left(\text{2}\text{C}\text{+}\text{2+}\text{N-H-X}\right)\\ \text{N}\text{-Nitrogen}\\ \text{C}\text{-}\text{Carbon}\\ \text{H}\text{-}\text{Hydrogen}\\ \text{X}\text{-}\text{Halogen}\end{array}$