Europium and ytterbium complexes with O -iminoquinonato ligands: Synthesis, structure, and magnetic behavior

Svetlana V. Klementyeva, Anton N. Lukoyanov, Mikhail Yu Afonin, Max Mörtel, Anton I. Smolentsev, Pavel A. Abramov, Alyona A. Starikova, Marat M. Khusniyarov, Sergey N. Konchenko

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

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 LnI 2 (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 LnI 2 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.

Original languageEnglish
Pages (from-to)3338-3348
Number of pages11
JournalDalton Transactions
Volume48
Issue number10
DOIs
Publication statusPublished - 5 Mar 2019

Keywords

  • TRANSITION-METAL-COMPLEXES
  • REDOX-ACTIVE LIGANDS
  • NON-INNOCENT LIGANDS
  • C BOND FORMATION
  • ELECTRONIC-STRUCTURE
  • OXIDATIVE ADDITION
  • IMINOBENZOSEMIQUINONATO COMPLEXES
  • LANTHANIDE COMPLEXES
  • DECAMETHYLYTTERBOCENE COMPLEXES
  • IMINOSEMIQUINONATE LIGANDS

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