Journal of Structural Chemistry

, Volume 39, Issue 5, pp 747–761 | Cite as

Syntheses and structural study of trinuclear iron acetates [Fe3O(CH3COO)6(H2O)3]Cl· 6H2O and [Fe3O(CH3COO)6(H2O)3] [FeCl4]· 2CH3COOH

  • S. G. Shova
  • I. G. Cadelnic
  • M. Gdaniec
  • Yu. A. Simonov
  • T. C. Jovmir
  • V. M. Meriacre
  • G. Filoti
  • C. I. Turta
Article
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Abstract

The structure of two trinuclear iron acetates [Fe3O(CH3COO)6(H2O)3]Cl· 6H2O (I) and [Fe3O(CH3COO)6(H2O)3][FeCl4] · 2CH3COOH (II) was determined by X-ray diffraction analysis. Crystals I and II are ionic and belong to the orthorhombic system with parameters a = 13.704(3), b = 23.332(5), c = 9.167(2) Å, R = 0.0355, space goup P21212 for I and a = 10.145(4), b = 15.323(6), c = 22.999(8) Å, R = 0.0752, space group Pbc21 for II. The complex cation [Fe3O(CH3COO)6(H2O)3]+ has a μ3-O-bridged structure typical for trinuclear iron (III) compounds. As shown by Mössbauer spectroscopy, the iron(III) ions are in the high-spin state. In trinuclear cations, antiferromagnetic exchange interaction takes place between the Fe(III) ions with the exchange parameter J = -26.69 cm−1 for II (Heisenberg-Dirac-Van Vleck model for D3h, symmetry).

Keywords

Magnetic Susceptibility Complex Cation Effective Magnetic Moment M6ssbauer Spectrum Antiferromagnetic Exchange Interaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • S. G. Shova
    • 1
    • 2
    • 3
    • 4
  • I. G. Cadelnic
    • 1
    • 2
    • 3
    • 4
  • M. Gdaniec
    • 1
    • 2
    • 3
    • 4
  • Yu. A. Simonov
    • 1
    • 2
    • 3
    • 4
  • T. C. Jovmir
    • 1
    • 2
    • 3
    • 4
  • V. M. Meriacre
    • 1
    • 2
    • 3
    • 4
  • G. Filoti
    • 1
    • 2
    • 3
    • 4
  • C. I. Turta
    • 1
    • 2
    • 3
    • 4
  1. 1.Institute of Applied PhysicsAcademy of SciencesKishinevMoldova Republic
  2. 2.Institute of ChemistryAcademy of SciencesKishinevMoldova Republic
  3. 3.A. Mickiewicz UniversityPoznanPoland
  4. 4.National Institute of Material PhysicsBucharestRumania

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