title: Iron(III) and iron(IV) corroles: synthesis, spectroscopy, structures, and no indications for corrole radicals.
abstract: A delicate control of reaction conditions allows the isolation of several distinctively different iron complexes of tris(pentafluorophenyl)- and tris(2,6-dichlorophenyl)corrole. As long as coordinating ligands are present, the iron(III) complexes are stable in solution. Otherwise they are aerobically oxidized to either mononuclear chloroiron(IV) or dinuclear (mu-oxo)iron(IV) complexes, in acidic and basic solutions, respectively (the latter holds only for tris(pentafluorophenyl)corrole). When treated with NaNO(2), the mononuclear chloroiron(IV) corroles are efficiently converted into diamagnetic iron nitrosyl complexes. The low- and intermediate-spin iron(III), iron nitrosyl, and chloroiron(IV) corroles were fully characterized by a combination of spectroscopic methods and X-ray crystallography. There was no indication for an open-shell corrole in any of the complexes.
authors.affiliation: Department of Chemistry, Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Haifa 32000, Israel.
authors.forename: Liliya
authors.initials: L
authors.lastname: Simkhovich
authors.forename: Israel
authors.initials: I
authors.lastname: Goldberg
authors.forename: Zeev
authors.initials: Z
authors.lastname: Gross