Note the feature between 3200 and 3500 cm-1 which is characteristic of the -OH group in alcohols.
This feature is broader than most of the other features in infra red spectra due to hydrogen bonding.
ethanol
methanol
propan-1-ol
| The three figures on this page show the infra red absorption spectra
of the alcohols methanol, ethanol and propan-1-ol.
Note the feature between 3200 and 3500 cm-1 which is characteristic of the -OH group in alcohols. This feature is broader than most of the other features in infra red spectra due to hydrogen bonding. |
ethanol |
|
methanol |
propan-1-ol |