what is the stretching frequency (in cm⁻¹) of the following carbonyl?\n1750\n1685\n1715
what is the stretching frequency (in cm⁻¹) of the following carbonyl?\n1750\n1685\n1715
Answer
Explanation:
Step1: Identify the carbonyl type
The given compound is an ester (aryl - alkyl ester).
Step2: Recall ester carbonyl stretching frequency range
Ester carbonyls typically have stretching frequencies in the range of 1735 - 1750 (cm^{-1}) for aliphatic esters and around 1715 - 1730 (cm^{-1}) for aromatic esters. The given ester is an aromatic - alkyl ester. Aromatic conjugation lowers the carbonyl stretching frequency compared to aliphatic esters.
Answer:
1715