Structure and Magnetic Properties of Lanthanide Compounds with the 3,6-Di(Tert-Butyl)-1,2-Benzoquinone Radical Anion

G. V. Romanenko, S. V. Fokin, G. A. Letyagin, A. S. Bogomyakov, V. I. Ovcharenko

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Molecular and crystal structures of mononuclear lanthanide (Ln) compounds with the 3,6-di(tert-butyl)-1,2-benzoquinone (SQ) radical anion of the composition [Ln(SQ)3(THF)2] (Ln = Pr, Nd, Eu, Tb, Dy), [Ln(SQ)3(Q)], (Ln = Gd, Eu; Q – 3,6-di(tert-butyl)-1,2-benzoquinone), [La(SQ)3(Q)(THF)], [CeIV(SQ)4], [NaLn(SQ)4(THF)3]·0.25C6H14 (Ln = Gd, Tb), [NaLn(SQ)4(Q)(THF)] (Ln = La, Pr) are determined. The study of the magnetic properties of isolated heterospin solid phases reveals that intramolecular antiferromagnetic exchange interactions between unpaired electrons of SQ moieties dominate in them. At T≤2 K [Dy(SQ)3(THF)2] exhibits the properties typical of a metamagnetic compound.

Original languageEnglish
Pages (from-to)1091-1100
Number of pages10
JournalJournal of Structural Chemistry
Volume60
Issue number7
DOIs
Publication statusPublished - 1 Jul 2019

Keywords

  • crystal structure
  • lanthanides
  • magnetic properties
  • mixed-metal compounds
  • mononuclear compounds
  • o-semiquinolates
  • sodium
  • CATECHOLATE
  • TRANSITION-METAL-COMPLEXES
  • LIGANDS
  • EPR
  • VALENCE TAUTOMERISM

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