Redox Modulation of Field-Induced Tetrathiafulvalene-Based Single-Molecule Magnets of Dysprosium
oleh: Siham Tiaouinine, Jessica Flores Gonzalez, Vincent Montigaud, Carlo Andrea Mattei, Vincent Dorcet, Lakhmici Kaboub, Vladimir Cherkasov, Olivier Cador, Boris Le Guennic, Lahcène Ouahab, Viacheslav Kuropatov, Fabrice Pointillart
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2020-08-01 |
Deskripsi
The complexes [Dy<sub>2</sub>(tta)<sub>6</sub>(<b>H2SQ</b>)] (<b>Dy-H<sub>2</sub>SQ</b>) and [Dy<sub>2</sub>(tta)<sub>6</sub>(<b>Q</b>)]·2CH<sub>2</sub>Cl<sub>2</sub> (<b>Dy-Q</b>) (tta<sup>−</sup> = 2-thenoyltrifluoroacetonate) were obtained from the coordination reaction of the Dy(tta)<sub>3</sub>·2H<sub>2</sub>O units with the 2,2′-benzene-1,4-diylbis(6-hydroxy-4,7-di-tert-butyl-1,3-benzodithiol-2-ylium-5-olate ligand (<b>H<sub>2</sub>SQ</b>) and its oxidized form 2,2′-cyclohexa-2,5-diene-1,4-diylidenebis(4,7-di-tert-butyl-1,3-benzodithiole-5,6-dione (<b>Q</b>). The chemical oxidation of <b>H<sub>2</sub>SQ</b> in <b>Q</b> induced an increase in the coordination number from 7 to 8 around the Dy<sup>III</sup> ions and by consequence a modulation of the field-induced Single-Molecule Magnet behavior. Computational results rationalized the magnetic properties of each of the dinuclear complexes.