[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

[Fe^II(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 journal › Article › peer-review

Abstract

The reaction of [Fe^II(L^•)₂][BF₄]₂ with LiTCNQF₄ results in the formation of [Fe^II(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 Fe^II 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 language	English
Journal	Australian Journal of Chemistry
Publication status	Accepted/In press - 3 Jun 2019

Keywords

Iron
TCNQF4
electrochemistry
radical
redox-active

Access to Document

Fe_II_TCNQF4_Revised_31st_May_2019_Aus_J_Chem_ArticleAccepted author manuscript, 666 KBLicence: Unspecified

Cite this

@article{7451e4493a8c43a68f1c548cb8dfc6b0,

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.\}",

year = "2019",

month = jun,

day = "3",

language = "English",

journal = "Australian Journal of Chemistry",

issn = "0004-9425",

}

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

SN - 0004-9425

JO - Australian Journal of Chemistry

JF - Australian Journal of Chemistry

ER -