Which of the following compounds gives an infrared spectrum with peaks in the ranges of 3200-3650 (strong, broad), but does not have peaks at 1630-1820 (strong) or 1600-1640 cm^-¹ (medium)?

Question

Quizplus · Accepted Answer

Compound 4 contains an alcohol functional group (-OH) which typically exhibits a broad peak in the 3200-3650 cm-1 range, corresponding to the O-H stretch. However, it does not contain a carbonyl group (C=O) which would give a strong peak in the 1630-1820 cm-1 range, or an alkene group (C=C) which would give a medium peak in the 1600-1640 cm-1 range. Therefore, compound 4 is the best choice for the given IR spectrum.

Which of the Following Compounds Gives an Infrared Spectrum with Peaks