Oxygen‐17 NMR studies of methanol and ethanol

The17O nmr of methanol‐17O and ethanol‐17O for extremely slow and very fast exchange of the hydroxyl proton has been investigated. In the case of slow exchange for methanol and ethanol a doublet was observed. A line shape analysis yielded for the spin‐spin coupling constants:J(methanol) = 85.5 Hz andJ(ethanol) = 83.6 Hz.17O correlation times and their connection with related times given in the literature are discussed. A comparison of the temperature dependence of the relaxation rates with those of similar molecular processes indicates a temperature dependence of the quadrupole coupling constant.