Formation and 1H NMR spectra of low spin ferric porphyrin radical cations with orientationally fixed imidazole ligands

Mikio Nakamura, Yumiko Kawasaki

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Abstract

Chemical oxidation of tetradurylporphyrinatoiron(III) chloride followed by the addition of 2-methylimidazole at -78 °C gave the first example of the low spin ferric porphyrin radical cation with orienta ionally fixed imidazole ligands, [Fe(TDṖ)(2-MeIm)2]2+. The degree of asymmetric spin distribution on the pyrrole β carbons in the radical cation was estimated to be close to that in the starting low spin complex, [Fe(TDP)(2-MeIm)2]+, which was ascribed to the orthogonality of porphyrin a2u with imidazole π orbitals.

Original languageEnglish
Pages (from-to)805-806
Number of pages2
JournalChemistry Letters
Issue number9
DOIs
Publication statusPublished - 1996 Jan 1

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ASJC Scopus subject areas

  • Chemistry(all)

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