Equilibrium and kinetic parameters of the oxygenation reaction of oxygen carriers. Conformational effects in cobalt(II) Schiff-base chelates derived from salicylaldehyde and substituted ethylenediamines

Abstract

Steric and conformational effects on the reversible oxygenation reaction in pyridine solutions of cobalt(II) chelates with Schiff bases obtained from salicylaldehyde and 1,2-disubstituted ethylenediamines have been studied. The equilibrium and reaction rate constants have been determined by polarographic methods. The results suggest that the oxygenation reaction is hindered by folding of the chelate induced by the steric requirements of the substituents of the ethylenediamines.