Manipulation of the heme electronic structure by external stimuli and ligand field

Yoshiki Ohgo, Masashi Takahashi, Kazuyuki Takahashi, Yukiko Namatame, Hisashi Konaka, Hatsumi Mori, Saburo Neya, Shinya Hayami, Daisuke Hashizume, Mikio Nakamura

Research output: Contribution to journalArticlepeer-review


This review describes the switching behaviors of the electronic structure, which were observed in iron(III) porphyrinoids, by the addition of external stimuli. The combined analysis by various methods, such as EPR, Mössbauer, SQUID, single crystal X-ray structure analysis, revealed a wide variety of electronic structures of the heme related complexes. This paper focuses in particular on the spin-crossover phenomenon in the solid state. An overview of spin-crossover phenomena found in iron(III) porphyrinoids between (i) S = 5/2 and S = 1/2, (ii) S = 3/2 and S = 1/2, (iii) S = 5/2 and S = 3/2, will be described.

Original languageEnglish
Pages (from-to)23-33
Number of pages11
JournalHyperfine Interactions
Issue number1-3
Publication statusPublished - 2012 Mar
Externally publishedYes


  • Electronic structure
  • Iron(III)
  • Porphyrin
  • Porphyrinoid
  • Spin-crossover

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


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