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Issue 10, 2019
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Europium and ytterbium complexes with o-iminoquinonato ligands: synthesis, structure, and magnetic behavior

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Abstract

Complexes of divalent ytterbium (1) and europium (2) with a dianionic o-amidophenolate ligand were prepared by both the direct reduction of 4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-iminobenzoquinone (dpp-IQ) and the salt metathesis reaction of potassium o-amidophenolate with LnI2 (Ln = Yb, Eu). Oxidation of o-amidophenolates 1, 2 with one equivalent of dpp-IQ as well as the salt metathesis reaction of potassium o-iminosemiquinolate with LnI2 afforded ligand mixed-valent o-iminosemiquinonato-amidophenolato complexes of trivalent ytterbium (3) and europium (4). All novel complexes 1–4 were fully characterized, including the solid state structures of 1 and 2 determined by single crystal X-ray diffraction. The magnetic properties of paramagnetic 2–4 were examined.

Graphical abstract: Europium and ytterbium complexes with o-iminoquinonato ligands: synthesis, structure, and magnetic behavior

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Publication details

The article was received on 08 Dec 2018, accepted on 08 Feb 2019 and first published on 09 Feb 2019


Article type: Paper
DOI: 10.1039/C8DT04849E
Citation: Dalton Trans., 2019,48, 3338-3348

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    Europium and ytterbium complexes with o-iminoquinonato ligands: synthesis, structure, and magnetic behavior

    S. V. Klementyeva, A. N. Lukoyanov, M. Yu. Afonin, M. Mörtel, A. I. Smolentsev, P. A. Abramov, A. A. Starikova, M. M. Khusniyarov and S. N. Konchenko, Dalton Trans., 2019, 48, 3338
    DOI: 10.1039/C8DT04849E

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