Slow Magnetic Relaxation in Chiral Helicene-Based Coordination Complex of Dysprosium

Guglielmo Fernandez-Garcia (1) , Jessica Flores Gonzalez (1) , Jiang-Kun Ou-Yang (1) , Nidal Saleh (1) , Fabrice Pointillart (1) , Olivier Cador (1) , Thierry Guizouarn (1) , Federico Totti (2) , Lahcène Ouahab (1) , Jeanne Crassous (1) , Boris Le Guennic (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 Department of Chemistry “Ugo Schiff”

The complex [Dy(L)(tta)(3)] with L the chiral 3-(2-pyridyl)-4-aza[6]-helicene ligand (tta(-) = 2-thenoyltrifluoroaacetonate) has been synthesized in its racemic form and structurally and magnetically characterized. [Dy(L)(tta)(3)] behaves as a single molecule magnet in its crystalline phase with the opening of a hysteresis loop at 0.50 K. These magnetic properties were interpreted with ab initio calculations.

Keywords: single molecule magnets; lanthanide; helicene; magnetic anisotropy; ab initio calculations

Domains: Chemical Sciences

Guglielmo Fernandez-Garcia, Jessica Flores Gonzalez, Jiang-Kun Ou-Yang, Nidal Saleh, Fabrice Pointillart, et al.. Slow Magnetic Relaxation in Chiral Helicene-Based Coordination Complex of Dysprosium. Magnetochemistry, 2016, 3 (1), ⟨10.3390/magnetochemistry3010002⟩. ⟨hal-01500406⟩