question 12\n0.5 pts\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\nnone of the…
question 12\n0.5 pts\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\nnone of the above\n1775\n1715\n1745
Answer
Explanation:
Step1: Identify the carbonyl type
The given compound is a cyclic ester (a lactone). Cyclic esters have characteristic carbon - oxygen double - bond (carbonyl) stretching frequencies.
Step2: Recall the frequency range for cyclic esters
The carbonyl stretching frequency for a five - membered cyclic ester (a γ - lactone) is around 1775 cm⁻¹.
Answer:
1775