On the effectiveness of the EPR radical equilibration technique in estimating O–H bond dissociation enthalpies of catechols and other complex polyphenols

Abstract

Although the EPR radical equilibration technique can give reliable O–H bond dissociation enthalpies (BDEs) for thermodynamically equilibrated species, it is still a challenge to deduce the O–H BDEs of catechols and other complex polyphenols through group-additivity analysis using this technique, if multi-step reactions are involved to reach the thermodynamic equilibrium, because in this case the group additivity is disrupted.