Formation and 1H NMR Spectra of Low Spin Ferric Porphyrin Radical Cations with Orientationally Fixed Imidazole Ligands

• Mikio Nakamura

  Department of Chemistry, Toho University School of Medicine

• Yumiko Kawasaki

  Department of Chemistry, Toho University School of Medicine

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(TDP•)(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.

Journal

• Chemistry Letters

  Chemistry Letters 25 (9), 805-806, 1996-09-01

  Oxford University Press (OUP)

Keywords

• General Chemistry

Details

• CRID: 1360846644039378304
• NII Article ID: 10002606265
• NII Book ID: AA00603318
• DOI: 10.1246/cl.1996.805
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/25/9/805/56071100/cl.1996.805.pdf
• Data Source:
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  • CiNii Articles