Dipole Moments and Spectral Features of Some Phenol-Diethylamine Complexes

Abstract

The dipole moments of molecular complexes of two types, AB and A2B2, formed between phenol derivatives with diethylamine in benzene solution have been determined. The polarity of the hydrogen bond, Δµ, in AB complexes depends on the pKa of the phenol and confirms the generality of the Δµ against pKa sigmoid curve. A2B2 complexes change their structure from chain to cyclic when the proton-donor properties of the phenol increase.