Five-coordinated metal complexes of bis(2-hydroxy-1-naphthylideneimine-3-propyl)amine and their reactivity towards dioxygen. Part II. EPR evidence for the role of the solvent on the stability of the Co(III)O2- species

Dioxygen adducts of bis(2-hydroxy-1-naphthyl-ideneimine-3-propyl)amine cobalt(II) complexes, in which either a hydrogen atom or a methyl group are present on the amino nitrogen atom of the ligand, were obtained and studied by EPR spectroscopy. The study shows an unexpectedly strong effect of the solvent(toluene or dimethylsulfoxide) on the stability of the adducts. The EPR study carried out at room and lower temperatures gave indications that an intramolecular process plays a major role in the decay of the cobaltoxygen species. © 1985.