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A compound with the formula C5H8O has the following DEPT 13C NMR spectrum. Draw the structure of the compound.
The given spectrum shows the estimated 13C NMR peaks of phenyl butyrate. Show which of these carbons will appear in DEPT-90 and DEPT-135 spectra.
Draw the expected DEPT sequence spectra for the following molecule.
Determine the number of signals detected in the 13C NMR spectrum of the following molecule.
The following proton-coupled 13C NMR spectrum reveals a structure with the molecular formula C9H18O. Determine the identity of the compound.
In distinguishing 1-hexene, cis-3-hexene, and 3-methylene pentane, which is better, 1H or 13C NMR spectroscopy? Explain your answer.
A sample of allyl chloride contained a significant amount of an impurity. The impurity was isolated using distillation technique and a 13C-NMR spectrum of the impurity was obtained.
If the molecular formula of the impurity is C3H6O:
(i) Give a plausible structure for the impurity.
(ii) Assign all peaks in the 13C-NMR spectrum of the impurity.
(iii) Explain how the impurity arose in the sample of allyl chloride.