Abstract

The resonance Raman and absorption spectra of unligated ferrous octaethylporphyrin [Fe2+ (OEP)] and its adduct with 2-MeIm or THF were observed. The resonance Raman spectrum of Fe2+ (OEP) in CH2Cl2 displayed characteristic features of iron porphyrin with three dπ electrons, suggesting 3Eg as the intermediate-spin (S = 1) ground state. Fe2+(OEP) in THF exhibited the ferrous high spin feature like Fe2+ (OEP) (2-MeIm) in CH2Cl2.

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