A study of substituent and base effects on the electron spin resonance spectra of the molecular oxygen adducts of cobalt(II) porphyrin chelates
Abstract
A detailed e.s.r. study of low-spin cobalt(II) porphyrins with formula [CoLL′(O2)] has shown that the spin-Hamiltonian parameters are hardly sensitive to changes in L (meso-substituted porphyrin) and L′(nitrogenous base). Only where L is protoporphyrin IX dimethyl ester are clearly discerned effects observed upon changing substituents on L′.