[FeII(L)2][TCNQF4•-]2: A Redox-active Double Radical Salt

Ian Gass, Jinzhen Lu, Ruchika Ojha, Mousa Asadi, David W. Lupton, Blaise Geoghegan, Boujemaa Moubaraki, Lisandra L. Martin, Alan M. Bond, Keith S. Murray

Research output: Contribution to journalArticle

Abstract

The reaction of [FeII(L)2][BF4]2 with LiTCNQF4 results in the formation of [FeII(L)2][TCNQF4•-]2·2CH3CN (1) (L is the neutral aminoxyl radical ligand, 4,4-dimethyl-2,2-di(2-pyridyl)oxazolidine-N-oxide; TCNQF4 is 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane). Single crystal X-ray diffraction; Raman, Fourier transform infrared (FTIR) and ultraviolet-visible (UV-Vis) spectroscopies; and electrochemical studies are all consistent with the presence of: a low-spin FeII ion; the neutral radical form (L) of the ligand; and the radical anion, TCNQF4•-. 1 is largely diamagnetic and the electrochemistry shows five well resolved, diffusion-controlled, reversible, one electron processes.
Original languageEnglish
JournalAustralian Journal of Chemistry
Publication statusAccepted/In press - 3 Jun 2019

Keywords

  • Iron
  • TCNQF4
  • electrochemistry
  • radical
  • redox-active

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