Spin-spin interactions in iron(III) porphyrin radical cations with ruffled and saddled structure

Souhei Kouno, Akira Ikezaki, Takahisa Ikeue, Mikio Nakamura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Oxidation of essentially pure intermediate-spin iron(III) porphyrinates such as ruffled Fe(TiPrP)ClO4 and saddled Fe(OETPP)ClO4 produces the corresponding six-coordinate iron(III) porphyrin(por) radical cations [Fe(Por)(ClO4)2], where TiPrP and OETPP are dianions of 5,10,15,20-tetraisopropylporphyrin and 2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyrin, respectively. Spin-spin interactions in these complexes are very much different; while ruffled [Fe(TiPrP)(ClO4)2] exhibits no antiferromagnetic coupling, saddled [Fe(OETPP)(ClO4)2] does exhibit it. The difference in magnetic behaviors has been explained in terms of the deformation mode and electron configuration of these complexes.

Original languageEnglish
Pages (from-to)718-721
Number of pages4
JournalJournal of Inorganic Biochemistry
Volume105
Issue number5
DOIs
Publication statusPublished - 2011 May

Keywords

  • Iron(III)
  • One-electron oxidation
  • Porphyrin complexes
  • Radical cation
  • Spin state

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry

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