Question

what is the stretching frequency (in cm⁻¹) of the following carbonyl?
o

1745
1715

Explanation:

Step1: Identify the carbonyl type

The given carbonyl is a cyclohexanone, which is a simple aliphatic cyclic ketone.

Step2: Recall the stretching - frequency range

For simple aliphatic cyclic ketones, the carbon - oxygen double - bond ($C = O$) stretching frequency is around 1715 $cm^{-1}$.

Answer:

1715