Abstract
AbstractTetradentate open‐chain Schiff base N2O2‐ligands of acacen, benacen or salen type and fluoride anions F− coordinate to the iron(III) central atom in methanol forming the complexes [Fe(N2O2)(CH3OH)F]. The complexes do not undergo spontaneous redox changes when kept in the dark. Their irradiation into intraligand or ligand‐to‐metal charge transfer bands causes the photoreduction of Fe(III) to Fe(II) associated with oxidation of metanol to its radical CH2OH. The final products of the primary photoredox and secondary dark redox processes, Fe(II) and CH2O, are formed in a 2:1 molar ratio. The efficiency of the axial methanol ligand photooxidation is strongly wavelength dependent and influenced by the peripheral groups R of the tetradentate ligands
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