Chlorido(2,3,7,8,12,13,17,18-octa-ethyl-porphyrinato)iron(III) dichloro-methane sesquisolvate.

The title mol-ecule, [Fe(C(36)H(44)N(4))Cl]·1.5CH(2)Cl(2), is a high-spin square-pyramidal iron(III) porphyrinate with an average value for the equatorial Fe-N bond lengths of 2.065 (3) Šand an axial Fe-Cl distance of 2.2430 (13) Å. The iron cation is displaced by 0.518 (1) Šfrom the 24-atom mean plane of the porphyrin ring. These values are typical for high-spin iron(III) porphyrinates.

Mixed-Valence Porphyrin π-Cation Radical Derivatives: Electrochemical Investigations.

The electrochemistry of [Cu(OEP)] and [Ni(OEP)] are compared with the mixed-valence π-cations [Cu(OEP•/2)]2+and[Ni(OEP•/2)]2+. These electrochemical studies, carried out with cyclic voltametry and hydrodynamic voltametry, show that the mixed valence π-cations have distinct electrochemical properties, although the differences between the [M(OEP)](+/0) and [M(OEP•/2)]2+/0 processes are subtle.