The [Fe{(SePPh2)2N}2] Complex Revisited : X‐ray Crystallography, Magnetometry, High‐Frequency EPR, and Mössbauer Studies Reveal Its Tetrahedral FeIISe4 Coordination Sphere

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2018
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Ferentinos, Eleftherios
Chatziefthimiou, Spyros
Boudalis, Athanassios K.
Pissas, Michael
Gast, Peter
Groenen, Edgar J. J.
Sanakis, Yiannis
Kyritsis, Panayotis
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European Journal of Inorganic Chemistry. 2018, 2018(6), pp. 713-721. ISSN 1434-1948. eISSN 1099-0682. Available under: doi: 10.1002/ejic.201701459
Zusammenfassung

The synthesis and characterization of complex [Fe{(SePPh2)2N}2] (1) is described. X-ray crystallography shows that this system contains a tetrahedral FeSe4 coordination sphere. The structural features of 1 are compared with those of similar first row transition element complexes, including a recently reported preparation of [Fe{(SePPh2)2N}2] (1SP) exhibiting a highly unusual square planar FeSe4 coordination sphere. The electronic structure of 1 was elucidated by magnetometry, high-frequency EPR, and Mössbauer spectroscopic studies, which reveal zero-field splitting (ZFS) parameters typical of high spin S = 2 tetrahedral FeII sites. Accurate ZFS parameters (D = +8.22 cm–1, E/D = 0.104) were obtained by analysis of the EPR spectra and compared with those of the analogous [Fe{(SePPh2)2N}2] complex.

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540 Chemie
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high-spin Fe2+, tetrahedral coordination, high-frequency EPR
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ISO 690FERENTINOS, Eleftherios, Spyros CHATZIEFTHIMIOU, Athanassios K. BOUDALIS, Michael PISSAS, Guinevere MATHIES, Peter GAST, Edgar J. J. GROENEN, Yiannis SANAKIS, Panayotis KYRITSIS, 2018. The [Fe{(SePPh2)2N}2] Complex Revisited : X‐ray Crystallography, Magnetometry, High‐Frequency EPR, and Mössbauer Studies Reveal Its Tetrahedral FeIISe4 Coordination Sphere. In: European Journal of Inorganic Chemistry. 2018, 2018(6), pp. 713-721. ISSN 1434-1948. eISSN 1099-0682. Available under: doi: 10.1002/ejic.201701459
BibTex
@article{Ferentinos2018FeSeP-42277,
  year={2018},
  doi={10.1002/ejic.201701459},
  title={The [Fe{(SePPh<sub>2</sub>)<sub>2</sub>N}<sub>2</sub>] Complex Revisited : X‐ray Crystallography, Magnetometry, High‐Frequency EPR, and Mössbauer Studies Reveal Its Tetrahedral Fe<sup>II</sup>Se<sub>4</sub> Coordination Sphere},
  number={6},
  volume={2018},
  issn={1434-1948},
  journal={European Journal of Inorganic Chemistry},
  pages={713--721},
  author={Ferentinos, Eleftherios and Chatziefthimiou, Spyros and Boudalis, Athanassios K. and Pissas, Michael and Mathies, Guinevere and Gast, Peter and Groenen, Edgar J. J. and Sanakis, Yiannis and Kyritsis, Panayotis}
}
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