Issue 10, 2019

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

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

Supplementary files

Article information

Article type
Paper
Submitted
08 Dec 2018
Accepted
08 Feb 2019
First published
09 Feb 2019

Dalton Trans., 2019,48, 3338-3348

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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