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Europium complexes with 1,2-bis(arylimino)acenaphthenes: a search for redox isomers

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Abstract

Reduction of 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (dpp-bian, 1) with metallic europium in 1,2-dimethoxyethane (dme) under anaerobic conditions gave a europium(II) complex with the acenaphthene-1,2-diimine dianion, (dpp-bian)Eu(dme)2 (4), in high yield. Oxidation of complex 4 with triphenyltin chloride or 1,2-dibromostilbene afforded the corresponding halogen derivatives [(dpp-bian)Eu(µ-Cl)(dme)]2 (5) and [(dpp-bian)Eu(µ-Br)(dme)]2 (6). The molecular structures of complexes 4–6 were determined by X-ray diffraction. The magnetic moments of complexes 5 and 6 remain constant over a temperature range from 25 to 295 K; they are indicative of the presence of the europium(II) ion and the dpp-bian radical anion in both the complexes.

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Authors and Affiliations

  1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603950, Nizhny Novgorod, Russian Federation

    I. L. Fedushkin, A. A. Skatova, D. S. Yambulatov & A. V. Cherkasov

  2. Institute of Inorganic Chemistry, Georg-August University, 4 Tammannstrasse, 37077, Göttingen, Germany

    S. V. Demeshko

Authors
  1. I. L. Fedushkin
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  2. A. A. Skatova
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  3. D. S. Yambulatov
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  4. A. V. Cherkasov
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  5. S. V. Demeshko
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Corresponding author

Correspondence to I. L. Fedushkin.

Additional information

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 0038–0043, January, 2015.

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Fedushkin, I.L., Skatova, A.A., Yambulatov, D.S. et al. Europium complexes with 1,2-bis(arylimino)acenaphthenes: a search for redox isomers. Russ Chem Bull 64, 38–43 (2015). https://doi.org/10.1007/s11172-015-0817-6

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  • DOI: https://doi.org/10.1007/s11172-015-0817-6

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