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À propos de : Synthesis, Structure, and the Unusual MagneticProperties of an Amine-Templated Iron(II) SulfatePossessing the Kagomé Lattice        

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  • Synthesis, Structure, and the Unusual MagneticProperties of an Amine-Templated Iron(II) SulfatePossessing the Kagomé Lattice
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  • An amine-templated iron(II) sulfate of the composition [H3N(CH2)6NH3] [FeII1.5F3(SO4)]·0.5H2O, I, representing an example of a Kagomé lattice with Fe in the +2 state, has beensynthesized under solvothermal conditions. Having determined the structure by single-crystalX-ray diffraction, the oxidation state of iron was established by Mössbauer spectroscopy.The magnetic properties of the Fe(II) Kagomé compound are rather unusual in that itundergoes ferrimagnetic ordering below 19 K and does not exhibit spin-glass freezing.
  • A layered iron(II)sulfate, [H3N(CH2)6NH3] [FeII1.5F3(SO4)]·0.5H2O, has been synthesized solvothermally in the presence of hexamethylenediamine. The network of Fe(II) cations in the framework represents the well-known Kagomé lattice (see figure) and shows a ferrimagnetic ordering around 19 K. The compound has been characterized by single-crystal XRD, Mössbauer spectroscopy, and magnetic susceptibility studies.
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