Electrochemical development of magnetic long-range correlations with Tc = 128 K in a tetraoxolene-bridged Fe-based framework

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Abstract

The generation of the paramagnetic radical (Cl2An[rad]3−) in the framework-edge moieties of an Fe-based two-dimensional honeycomb framework with 2,5-dichloro-3,6-dihydroxy-1,4-benzoquinonate (Cl2Ann ), (H3O)2(phz)3[Fe2(Cl2An)3] (phz = phenazine), allowed the formation of long-range magnetic correlations over the network with a relative high magnetic phase transition temperature (Tc) of 128 K. The original compound is a paramagnet with a diamagnetic Cl2An2− linker that significantly separates paramagnetic FeII ions (S = 2), where the [(H3O)2(phz)3]2+ cation is located between layered frameworks. Post-synthetic electron-doping, i.e., reduction in the solid state, using a lithium-ion battery (LIB) system, finally produced (Li+)3(H3O+)2(phz)3[(Fe2+)2(Cl2An[rad]3−)3], which demonstrated a drastic magnetic change.

Original languageEnglish
Article number165818
JournalJournal of Magnetism and Magnetic Materials
Volume494
DOIs
Publication statusPublished - 2020 Jan 15

Keywords

  • Electron-doping
  • Fe-tetraoxolene complex
  • Lithium ion battery
  • Molecular magnets
  • Postsynthetic method
  • Two-dimensional honeycomb framework

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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