Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex

Sean F. McWilliams, Philip C. Bunting, Venkatesan Kathiresan, Brandon Q. Mercado, Brian M. Hoffman, Jeffrey R. Long, Patrick L. Holland*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


We report a rare example of a mixed-valence iron compound with an FeNNFe core, which gives insight into the structural, spectroscopic, and magnetic influences of single-electron reductions and oxidations. In the new compound, the odd electron is localized as judged from Mössbauer spectra at 80 K and infrared spectra at room temperature, and the backbonding into the N2 unit is intermediate between diiron(i) and diiron(0) congeners. Magnetic susceptibility and relaxation studies on the series of FeNNFe compounds show significant magnetic anisotropy, but through-barrier pathways enable fairly rapid magnetic relaxation.

Original languageEnglish (US)
Pages (from-to)13339-13342
Number of pages4
JournalChemical Communications
Issue number95
StatePublished - 2018

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Metals and Alloys
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • General Chemistry
  • Catalysis


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