The hydrogen bond in heterocyclic aminomethylphenols and hydroxyderivatives of aromatic sulfides

The dipole moments of N-(2-hydroxy-5-alkylbenzyl)-piperidines, NN'-bis-(2-hydroxy-5-tert-amylbenzyl)-piperazine, ?-hydroxyethyl aryl sulfides, and arylmercaptoacetic acids have been determined experimentally, and also calculated by the vector method. On the basis of the results obtained, and on the IR spectra, it is shown that intramolecular hydrogen bonds exist in the above compounds, with the exception of the arylmercaptoacetic acids.