#2.48 Alright so that is the problem , and the second picture is the solution, w

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#2.48 Alright so that is the problem , and the second picture is the solution, why is there a singlet when the multiplicity of the hydroxyl group should be n+1=3, is this just a typo in the book?

50 4.5 4.0 3.5 3.0. 2.5 2.0 1.5 1.0 0.5 Chemical Shift (ppm) 24s Propose a structure for a compound with molecular formula CsHIOO that is consistent with the follow proton NMR spectrum. Proton NMR Chemical Shift (ppm) Your entock has many more spectroscopy problems, including problems in which you are giver both IR and NMR spectra. I recommend that you do ALL of those problems. The skills in this chap ter were meant to prepare you for those problems.

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SOLUTION:

Your question is why is -OH proton a singlet not triplet or is it a typing mistake.

Answer is that the -OH signal is singlet. It should have been triplet because of splitting by a neighbouring -CH2- group. But due to rapid exchange of -OH proton between alcohol molecules it does not get enough time to interact with neighbouring -CH2- protons, hence only a singlet is observed.

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