How many peaks are observed in the 1H NMR signal for each proton shown in red in palau’amine, the complex chapter-opening molecule?
The signals of NMR may have the different number of peaks which is termed as the splitting of signal. The signal which consists of one line is termed as singlet, followed by the doublet, triplet, and etc. A signal having more than seven lines is called multiplet. The number of peaks can be determined by using (n+1) rule where n is the number of protons present on the neighboring carbon atom.
Note: The proton present on the nitrogen atom (amino hydrogens) give a broad singlet (unsplit) and in turn the hydrogen present on the alpha carbon are also unsplit by the amino hydrogens.
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