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Full-Text Articles in Physical Sciences and Mathematics
Visible And Resonance Raman Spectra Of Low Valent Iron Porphyrins, Chathra De Silva, Kazimierz Czarnecki, Michael D. Ryan
Visible And Resonance Raman Spectra Of Low Valent Iron Porphyrins, Chathra De Silva, Kazimierz Czarnecki, Michael D. Ryan
Chemistry Faculty Research and Publications
The resonance Raman spectrum of Fe(TPP)2− was obtained after the three-electron electrochemical reduction of Fe(TPP)(Cl). The coulometric reduction was carried out in the presence of bis(triphenylphosphoanylidine)ammonium chloride in DMF in order to avoid the formation of iron–σ-alkyl complexes. The resonance Raman spectrum of the intermediate oxidation states (Fe(TPP) and Fe(TPP)−) were consistent with previous work. The spectrum of the three-electron product, Fe(TPP)2−, obtained at 442 nm, was qualitatively similar to the two-electron reduced product, Fe(TPP)−, with an intense ν2 band at 1537 cm−1. The high frequency bands generally decreased in …