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Mössbauer spectroscopic and magnetic properties of iron/III/ pheophytins

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Abstract

Mössbauer spectra of /pheophytinato a/ iron/III/ chloride [Fe/Pheo-a/Cl] and /pheophytinato b/ iron/III/ chloride [Fe/Pheo-b/Cl] have revealed that the central iron/III/ ion is in a high-spin state and axially coordinated by chloride ions in solid phase. Temperature-dependent asymmetry observed for the quadrupole splitting doublet of iron/III/ pheophytins, i.e., Fe/Pheo-a/Cl and Fe/Pheo-b/Cl, is interpreted on the basis of the zero-field splitting. The structural difference between iron/III/ pheophytins and iron/III/ porphyrins is reflected in the quadrupole splitting more than in the isomer shift. Magnetic behaviour of iron/III/ pheophytins near 4.2 K is very similar to that of iron/III/ porphyrins.

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Authors and Affiliations

  1. Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, 223, Yokohama, Japan

    H. Hori, K. Kadono, H. Inoue & T. Shirai

  2. Gmelin-Institut der Max-Planck-Gesellschaft, Varrentrappstrasse 40/42, D-6000, Frankfurt am Main 90, FRG

    E. Fluck

Authors
  1. H. Hori
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  2. K. Kadono
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  3. H. Inoue
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  4. T. Shirai
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  5. E. Fluck
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Hori, H., Kadono, K., Inoue, H. et al. Mössbauer spectroscopic and magnetic properties of iron/III/ pheophytins. Journal of Radioanalytical and Nuclear Chemistry Letters 136, 159–168 (1989). https://doi.org/10.1007/BF02164106

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  • DOI: https://doi.org/10.1007/BF02164106

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