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RESEARCH ARTICLE
Contents Vol 72(10)

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

Ian A. Gass https://orcid.org/0000-0001-8951-7847 A B C , Jinzhen Lu A , Ruchika Ojha A , Mousa Asadi A , David W. Lupton https://orcid.org/0000-0002-0958-4298 A , Blaise L. Geoghegan B , Boujemaa Moubaraki A , Lisandra L. Martin https://orcid.org/0000-0003-0486-5813 A , Alan M. Bond https://orcid.org/0000-0002-1113-5205 A and Keith S. Murray A C
+ Author Affiliations
- Author Affiliations

A School of Chemistry, Monash University, Clayton, Vic. 3800, Australia.

B School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK.

C Corresponding authors. Email: i.gass@brighton.ac.uk; keith.murray@monash.edu

Australian Journal of Chemistry 72(10) 769-777 https://doi.org/10.1071/CH19175
Submitted: 17 April 2019  Accepted: 3 June 2019   Published: 19 July 2019

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 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.


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