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11 Nov 2019
The 'H NMR spectrum for cyclopentanol (shown below) consists of peaks at 4.8 ppm (IH, broad singlet), 4.32 ppm (1H, quintet) and several overlapping peaks between 1.5 and 1.8 ppm (8H, multiplets). Write the letters of the hydrogen atoms you labeled above under the peaks they correspond to. You do not need to identify individual peaks from 1.5-1.8, but do indicate all the hydrogen atoms that would appear in that range. f) Briefly explain why there are not just two peaks with clean splitting between 1.5 and 1.8 that are easy to interpret. g) h) Explain why the peak at 4.8 ppm is a broadened singlet.
The 'H NMR spectrum for cyclopentanol (shown below) consists of peaks at 4.8 ppm (IH, broad singlet), 4.32 ppm (1H, quintet) and several overlapping peaks between 1.5 and 1.8 ppm (8H, multiplets). Write the letters of the hydrogen atoms you labeled above under the peaks they correspond to. You do not need to identify individual peaks from 1.5-1.8, but do indicate all the hydrogen atoms that would appear in that range. f) Briefly explain why there are not just two peaks with clean splitting between 1.5 and 1.8 that are easy to interpret. g) h) Explain why the peak at 4.8 ppm is a broadened singlet.
Keith LeannonLv2
29 Apr 2019