what is the stretching frequency (in cm⁻¹) of the following carbonyl?\nnone of the above\n1655\n1775\n1715\n1…
what is the stretching frequency (in cm⁻¹) of the following carbonyl?\nnone of the above\n1655\n1775\n1715\n1745
Answer
Explanation:
Step1: Identify the carbonyl type
The given carbonyl is an $\alpha,\beta -$ unsaturated cyclic ketone.
Step2: Recall the stretching - frequency range
For $\alpha,\beta -$ unsaturated cyclic ketones, the carbon - oxygen double - bond ($C = O$) stretching frequency is around 1650 - 1680 $cm^{-1}$.
Answer:
1655