Magnetochemistry (Feb 2021)

Field-Induced Single-Molecule Magnets of Dysprosium Involving Quinone Derivatives

  • Konstantin Martyanov,
  • Jessica Flores Gonzalez,
  • Sergey Norkov,
  • Bertrand Lefeuvre,
  • Vincent Dorcet,
  • Vladimir Cherkasov,
  • Olivier Cador,
  • Viacheslav Kuropatov,
  • Fabrice Pointillart

DOI
https://doi.org/10.3390/magnetochemistry7020024
Journal volume & issue
Vol. 7, no. 2
p. 24

Abstract

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The coordination reaction of the [Dy(hfac)3(H2O)2] units (hfac− = 1,1,1,5,5,5-hexafluoroacetylacetonate) with the two quinone-based derivatives 4,7-di-tert-butyl-2-(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)benzo[d][1,3]dithiole-5,6-dione (L1) and 7,8-dithiabicyclo[4.2.0]octa-1,5-diene-3,4-dione,2,5bis(1,1-dimethylethyl) (L2) led respectively to the complexes [Dy(hfac)3(H2O)(L1)] (1) and [Dy(hfac)3(H2O) (L2)]⋅(C6H14)(CH2Cl2) (2)⋅(C6H14)(CH2Cl2). X-ray structures on single crystal of 1 and 2⋅(C6H14)(CH2Cl2) revealed the coordination of the DyIII on the bischelating oxygenated quinone site and the formation of dimeric species through hydrogen bonds. Ac magnetic measurements highlighted field-induced single-molecule magnet behavior with magnetic relaxation through a Raman process.

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