Tajima K, Ishizu K, Sakurai H, Ohya-Nishiguchi H
Biochem Biophys Res Commun. 1986 Mar 28;135(3):972-8. doi: 10.1016/0006-291x(86)91023-5.
A ferric low-spin species with an anomalously small g3-g1 separation generated by the reaction of Fe(III)tetraphenylporphyrin with t-butylhydroperoxide in the presence of tatramethylammonium hydroxide was characterized by ESR spectroscopy. The reaction kinetics, investigated by monitoring ESR intensity, indicated that this low-spin complex is highly reactive and easily changed to non-heme type iron complexes. The rhombic parameters of this complex are very similar to those of heme-peroxide adducts such as [Fe(II)-hemoglobin-O2]- and [Fe(II)-horseradish peroxidase-O2]-.
