STERIC AND ELECTRONIC EFFECTS OF LIGAND VARIATION ON COBALT DIOXYGEN CATALYSTS

Article abstract of DOI:10.1021/ja00296a012

We report herein the observation that electronic and steric factors of cobalt dioxygen complexes with systematically derivatized pentadentate Schiff-base ligands affects their ability to catalyze the oxidation of sustituted phenols and alter the rate of catalyst decomposition.The electronic and steric factors can be separated sufficiently to indicate that the activity of the cobalt dioxygen catalyst roughly parallels the trends in basicity of the bound O2 suggested by EPR cobalt hyperfine coupling constants of the adducts and predicted from the electronic effects of substituents.