question 16\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\n1655\n1685
question 16\nwhat is the stretching frequency (in cm⁻¹) of the following carbonyl?\n1655\n1685
Answer
Explanation:
Step1: Identify the carbon - amide group
The given compound has a carbon - amide group (amide) with an adjacent double bond (conjugated system).
Step2: Recall amide carbonyl stretching frequency range
Conjugated amides have carbonyl stretching frequencies in the range of 1630 - 1680 cm⁻¹.
Step3: Select the appropriate value
Among the given options, 1655 cm⁻¹ lies within the typical range for a conjugated amide carbonyl stretching frequency.
Answer:
1655