Dimerized p-Semiquinone Radical Anions Stabilized by a Pair of Rare-Earth Metal Ions

Research output: Contribution to journalArticle

  • External authors:
  • Tian Han
  • Jonatan B. Petersen
  • Zi-han Li
  • Yuan-qi Zhai
  • Andreas Kostopoulos
  • Fabrizio Ortu
  • Yan-zhen Zheng

Abstract

Here we report stable p-quinone-radical-bridged rare-earth complexes involving the ligand tetramethylquinone (QMe4•–). The complexes, {Y[(QMe4)•–Cl2(THF)3]}2 (1) and {Gd[(QMe4)•–Cl2(THF)3]}2 (2), where THF = tetrahydrofuran, are sufficiently stable that we can measure the single-crystal structures and perform magnetic and electron paramagnetic resonance measurements. These studies show the presence of a semiquinone form and that the magnetic interaction between the radicals in the dimer is strong and antiferromagnetic.

Bibliographical metadata

Original languageEnglish
JournalInorganic Chemistry
Early online date11 May 2020
DOIs
Publication statusE-pub ahead of print - 11 May 2020