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Structure, IR and Mössbauer spectra, and magnetic properties of [Fe2CoO(CH3COO)6(3-CI-Py)3]· 1/4· 3-Cl-Py· 1/4(CH3)2CO· 1/2H2O

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Abstract

The structure of the hetemnuclear iron acetate [Fe2CoO(CH3COO)6(3-Cl-Py)3]·1/4· 3-Cl-y× 1/4(CH3)2CO· 1/2H2O was determined by X-ray structure analysis. The crystal has a molecular structure and is monoclinic with lattice parameters a = 21.034(4). b = 8.398(2), c = 23.360(5) Å, β= 98.28(3)‡, R = 0.0656. space group P21/c. The trinuclear complex [Fe2CoO(CH3COO)6(H2O)3] has a structure typical for iron(III) μ3-O compounds with iron atoms hing at the vertices of the equilateral triangle centered by an oxygen atom. The metal atoms are each coordinated to four oxygen atoms of the four bridging carboxy groups, the bridging oxygen atom (μ3-O), and the coordinated 3-chloropyridine molecule which is trans relative to the latter atom. According to Mössbauer spectroscopy data, the iron(III) ions are in the high-spin state. The value of (μef)mole/μ3 at room temperature and its temperature dependence suggest that the resulting magnetic exchange interaction between the paramagnetic centers of the cluster is antiferromagnetic.

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Authors and Affiliations

  1. Institute of Chemistry, Academy of Sciences, Kishinev, Moldova Republic

    T. C. Jovmir, C. I. Turta, S. G. Shova, Yu. A. Simonov, M. Gdaniec, I. I. Bulgac, I. G. Cadelnic & G. Filoti

  2. Institute of Applied Physics, Academy of Sciences, Kishinev, Moldova Republic

    T. C. Jovmir, C. I. Turta, S. G. Shova, Yu. A. Simonov, M. Gdaniec, I. I. Bulgac, I. G. Cadelnic & G. Filoti

  3. A. Mickiewicz University, Poznan, Poland

    T. C. Jovmir, C. I. Turta, S. G. Shova, Yu. A. Simonov, M. Gdaniec, I. I. Bulgac, I. G. Cadelnic & G. Filoti

  4. National Institute of Physics of Materials, Bucharest, Romania

    T. C. Jovmir, C. I. Turta, S. G. Shova, Yu. A. Simonov, M. Gdaniec, I. I. Bulgac, I. G. Cadelnic & G. Filoti

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  1. T. C. Jovmir
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  2. C. I. Turta
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Jovmir, T.C., Turta, C.I., Shova, S.G. et al. Structure, IR and Mössbauer spectra, and magnetic properties of [Fe2CoO(CH3COO)6(3-CI-Py)3]· 1/4· 3-Cl-Py· 1/4(CH3)2CO· 1/2H2O. J Struct Chem 40, 905–913 (1999). https://doi.org/10.1007/BF02700699

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  • DOI: https://doi.org/10.1007/BF02700699

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