A compound with molecular formula C₆H₁₁N has the following ¹H NMR spectrum. Which of the following is the correct number of protons giving rise to each signal? SHAPE \* MERGEFORMAT

Question

Quizplus · Accepted Answer

Looking at the NMR peaks, we can see that the peak at around 0-1 ppm is a singlet with an integration of 6H, indicating that there are six equivalent protons. This corresponds to the protons on the methyl group attached to sulfur. 
The peak at around 1-2 ppm is a quartet with an integration of 4H, indicating that there are four equivalent protons. This corresponds to the protons on the methylene group attached to nitrogen. 
The peak at around 2-3 ppm is a singlet with an integration of 1H, which corresponds to the proton on the hydroxyl group attached to boron. 
Therefore, the correct answer is C) I - 6H, II - 4H, III - 1H.

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A Compound with Molecular Formula C₆H₁₁N Has the Following ¹H