Ch_322b_20.15 - The N-H proton may appear anywhere between...

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Analysis of Amines Infrared Spectroscopy Primary and secondary amines show characteristic absorption bands between 3300-3500 cm -1 associated with the N-H stretch. Primary amines show two bands (symmetric and asymmetric stretches) while secondary amines show a single band. R-N H H : R-N R' H R-N R' R'' two bands one band no absorption N-H Stretch 3300-3500 cm -1 Proton NMR Spectroscopy
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Unformatted text preview: The N-H proton may appear anywhere between ! 1-5 . The signals may be broad and are influenced by solvent, concentration and other factors. Because of rapid proton exchange among nitrogen atoms (facilitated by intermolecular hydrogen bonding), N-H protons usually do not spin-spin couple to H on adjacent carbon atoms....
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