[TCNQF4-]2: A Redox-Active Double Radical Salt

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

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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 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
Pages (from-to)769-777
Number of pages9
JournalAustralian Journal of Chemistry
Issue number10
Publication statusPublished - 19 Jul 2019

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