Abstract Benzotriazole forms with amines stable complexes that in some cases separate spontaneously as crystals from solutions of polar organic solvents. The stoichiometries and the binding constants of these complexes have been determined by 1 H NMR analysis in deuterochloroform. The quantitative analysis of the equilibria involved in the complexation process sheds light on the behaviour of benzotriazoles in solutions and gives an estimate ...
