question 5\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\nnone of the…
question 5\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\nnone of the above\n1685\n1715\n1745
Answer
Explanation:
Step1: Identify carbonyl type
The given is a cyclic ketone. Ring - strain affects carbonyl stretching frequency. Smaller rings have higher - energy carbonyls.
Step2: Recall frequency range
Cyclic ketones with ring - strain (such as cyclopropanone) have carbonyl stretching frequencies around 1745 cm⁻¹ due to increased ring - strain.
Answer:
1745