Question

what stretching frequencies (in cm⁻¹) are present in the structure below? all of these 1800 none of these 1745

Explanation:

Step1: Identify the functional group

The structure is an acyl - chloride. The main stretching frequency of interest is the C=O stretching frequency.

Step2: Recall C=O stretching frequency range for acyl - chlorides

The C=O stretching frequency for acyl - chlorides is in the range of 1750 - 1800 $cm^{-1}$.

Answer:

1800