BIOINORGANIC APPROACH TO THE CYTOCHROME OXIDASE ACTIVE SITE. STRONGLY SPIN-COUPLED COPPER(II)-IRON(III) HETERO-METAL BINUCLEAR COMPLEXES

Article abstract of DOI:10.1246/cl.1980.1281

Copper(II)-iron(III) binuclear complexes, CuFe(fsaR)Cl*nH2O, with N,N'-bis(3-carboxysalicylidene)alkanediamines (H4fsaR) were prepared and characterized.Cryomagnetic measurements indicated a considerably strong antiferromagnetic spin-exchange interaction operating between the metal ions.The exchange integrals (ca. -50 cm^-1) are the largest among the copper(II)-iron(III) complexes so far reported, and hence the complexes mimic the cytochrome oxidase active center.