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Magnetic Properties of (C5H6N)5[Fe13O4F24(OCH3)12] · CH3OH · 4H2O

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Abstract

The static magnetic susceptibility of Fe(III) complex [Fe13O4F24(OCH3)12]5– was measured in the temperature range 2–300 K. The structure of the complex consists of four triangular Fe3 fragments interacting with a central Fe atom. By disregarding weak exchange interactions through F bridges, an analytical solution of the exchange Hamiltonian was obtained with Nf ≈ 1.3 × 1010 levels. This made it possible to perform quantitative interpretation of the temperature dependence of the magnetic susceptibility. The obtained exchange parameters of the best approximation are –2J 1 = 43 cm–1, –2J 2 ≈ 30 cm–1. The ratio J 2/J 1 ≈ 0.70 suggests that the Fe13 ground state has the spin of the ground state 23/2 or 15/2.

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Authors and Affiliations

  1. Institute of Rare Element and Mineral Chemistry and Technology, Kol'skii Research Center, Russian Academy of Sciences, ul. Fersmana 14, Apatity, Murmansk oblast, 184200, Russia

    Yu. V. Rakitin

  2. Dipartimento di Chimica, Universita degli Studi di Firenze, Via Maragliano 75-77, 1-50144, Firenze, Italy

    J. van Slageren

Authors
  1. Yu. V. Rakitin
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  2. J. van Slageren
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Rakitin, Y.V., van Slageren, J. Magnetic Properties of (C5H6N)5[Fe13O4F24(OCH3)12] · CH3OH · 4H2O. Russian Journal of Coordination Chemistry 30, 810–812 (2004). https://doi.org/10.1023/B:RUCO.0000047469.33178.45

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  • DOI: https://doi.org/10.1023/B:RUCO.0000047469.33178.45

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