Chapter 2, Problem 76IP

Interpretation Introduction

Interpretation:

Three different signals that can be used to analyze the transformation of 1 to 2 have to be described.

Concept introduction:

IR spectroscopy is the study of absorption of infrared radiation, which causes vibrational transition in a molecule.

Principle of IR spectroscopy

• Molecules are made up of atoms linked by chemical bonds. The movement of atoms is like spring and balls (vibration).
• This characteristic vibration is called natural frequency of vibration.

$OH$ signal in IR spectroscopy should be a broad signal in the range of $3200-3600c{m}^{-1}$

In IR spectroscopy, aldehyde group can show a signal in the range of $2750-2850c{m}^{-1}$