Which of the following compounds gives an infrared spectrum with a peak at ˜1750 cm−¹, but no significant peaks at 3000−3500 cm−¹ or 1050−1250 cm−¹?

Question

Quizplus · Accepted Answer

The peak at ˜1750 cm−¹ suggests the presence of a carbonyl group (C=O), which is characteristic of compounds such as ketones, aldehydes, and carboxylic acids. Out of the four choices, only compound B has a carbonyl group at the appropriate frequency range without any significant peaks at 3000−3500 cm−¹ (which would suggest the presence of -OH or -NH groups) or 1050−1250 cm−¹ (which would suggest the presence of C-O or C-N bonds).

Which of the Following Compounds Gives an Infrared Spectrum with a Peak