X-ray Photoelectron Spectroscopic Studies on Monomeric and Dimeric Iron Porphyrins

K. M. Kadish, L. A. Bottomley, J. G. Brace, N. Winograd

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The Fe 2p3/2 and N Is X-ray PES binding energies for the dimeric iron porphyrin complexes µ-nitrido-bis[α,β,γ,δ-tetraphenylporphinatoiron] and g-oxo-bis[α,β,γ,δ-tetraphenylporphinatoiron] are reported. In addition, X-ray PES binding energies for the monomeric α,β,γ,δ-tetraphenylporphinatoiron cation with selected anions (CIO4-, Br-, Cl-, and N3-) are found to be correlated with the half-wave potentials for reduction in the noncoordinating solvent dichloromethane. Comparisons are made between the previously reported infrared, Mossbauer, X-ray crystallographic, magnetic susceptibility, and electrochemical results and the X-ray PES data in an attempt to unambiguously assign the electron environment of the µ-nitrido complex. In contrast to the µ-oxo dimer and the monomers, the electronic configuration about each five-coordinate Fe atom in the µ-nitrido dimer has been shown to be low spin.

Original languageEnglish (US)
Pages (from-to)4341-4344
Number of pages4
JournalJournal of the American Chemical Society
Issue number13
StatePublished - Jun 1980

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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