Hydrogen Bonding Interaction of the Mannich Base, 4-Nitro-2-[(diethylamino) methyl] Phenol with Amines

Solvation and Temperature Effects on the Proton Transfer Equilibria between 2,5-dihydroxy-p-benzoquinone and amines

“…In previous papers the solvent and temperature effects upon the PT process were studied. [9][10][11] The solvation effect on a reaction is either long or short range in nature. The long range effect is the result of solvent polarity and may be described by such units as the dielectric constant or Taft's π scale, which relates to the ease with which charge separation may occur in solution.…”

“…[13][14][15] The UV-Vis spectroscopy seemed to be a suitable method for study of PT process in H-bonded complexes. [9][10][11][12] Proton transfer equilibria including hydroxybenzoquinones and proton acceptors are not reported in the literature. Hence the aim of the present work was to study the proton transfer equilibria between DHBQ and a group of tertiary aromatic and aliphatic amines by applying UV-Vis spectroscopy.…”