[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

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Salts
Ligands
Ultraviolet visible spectroscopy
Electrochemistry
Oxides
Anions
Fourier transforms
Single crystals
Ions
Infrared radiation
X ray diffraction
Electrons
Oxidation-Reduction
tetracyanoquinodimethane
oxazolidine

Keywords

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

Cite this

Gass, I., Lu, J., Ojha, R., Asadi, M., Lupton, D. W., Geoghegan, B., ... Murray, K. S. (Accepted/In press). [FeII(L)2][TCNQF4•-]2: A Redox-active Double Radical Salt. Australian Journal of Chemistry.
Gass, Ian ; Lu, Jinzhen ; Ojha, Ruchika ; Asadi, Mousa ; Lupton, David W. ; Geoghegan, Blaise ; Moubaraki, Boujemaa ; Martin, Lisandra L. ; Bond, Alan M. ; Murray, Keith S. / [FeII(L)2][TCNQF4•-]2 : A Redox-active Double Radical Salt. In: Australian Journal of Chemistry. 2019.
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title = "[FeII(L•)2][TCNQF4•-]2: A Redox-active Double Radical Salt",
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.",
keywords = "Iron, TCNQF4, electrochemistry, radical, redox-active",
author = "Ian Gass and Jinzhen Lu and Ruchika Ojha and Mousa Asadi and Lupton, {David W.} and Blaise Geoghegan and Boujemaa Moubaraki and Martin, {Lisandra L.} and Bond, {Alan M.} and Murray, {Keith S.}",
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Gass, I, Lu, J, Ojha, R, Asadi, M, Lupton, DW, Geoghegan, B, Moubaraki, B, Martin, LL, Bond, AM & Murray, KS 2019, '[FeII(L)2][TCNQF4•-]2: A Redox-active Double Radical Salt', Australian Journal of Chemistry.

[FeII(L)2][TCNQF4•-]2 : A Redox-active Double Radical Salt. / Gass, Ian; Lu, Jinzhen; Ojha, Ruchika; Asadi, Mousa; Lupton, David W.; Geoghegan, Blaise; Moubaraki, Boujemaa; Martin, Lisandra L.; Bond, Alan M.; Murray, Keith S.

In: Australian Journal of Chemistry, 03.06.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - [FeII(L•)2][TCNQF4•-]2

T2 - A Redox-active Double Radical Salt

AU - Gass, Ian

AU - Lu, Jinzhen

AU - Ojha, Ruchika

AU - Asadi, Mousa

AU - Lupton, David W.

AU - Geoghegan, Blaise

AU - Moubaraki, Boujemaa

AU - Martin, Lisandra L.

AU - Bond, Alan M.

AU - Murray, Keith S.

PY - 2019/6/3

Y1 - 2019/6/3

N2 - 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.

AB - 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.

KW - Iron

KW - TCNQF4

KW - electrochemistry

KW - radical

KW - redox-active

M3 - Article

JO - Australian Journal of Chemistry

JF - Australian Journal of Chemistry

SN - 0004-9425

ER -

Gass I, Lu J, Ojha R, Asadi M, Lupton DW, Geoghegan B et al. [FeII(L)2][TCNQF4•-]2: A Redox-active Double Radical Salt. Australian Journal of Chemistry. 2019 Jun 3.