Redox Modulation of Field-Induced Tetrathiafulvalene-Based Single-Molecule Magnets of Dysprosium

Magnetochemistry

Vladimir Cherkasov¹  Viacheslav Kuropatov¹  Boris Le Guennic²  Fabrice Pointillart²  Jessica Flores Gonzalez²  Lahcène Ouahab²  CarloAndrea Mattei²  Vincent Dorcet²  Vincent Montigaud²  Olivier Cador²  Lakhmici Kaboub²  Siham Tiaouinine² 

[1] G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, GSP-445, Tropinina str., 49, 603950 Nizhny Novgorod, Russia;Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, F-35000 Rennes, France;

关键词: Dysprosium;    tetrathiafulvalene;    Redox-Modulation;    single molecule magnets;    ab initio calculations;   

DOI  :  10.3390/magnetochemistry6030034

来源: DOAJ

【 摘 要 】

The complexes [Dy₂(tta)₆(H2SQ)] (Dy-H₂SQ) and [Dy₂(tta)₆(Q)]·2CH₂Cl₂ (Dy-Q) (tta⁻ = 2-thenoyltrifluoroacetonate) were obtained from the coordination reaction of the Dy(tta)₃·2H₂O units with the 2,2′-benzene-1,4-diylbis(6-hydroxy-4,7-di-tert-butyl-1,3-benzodithiol-2-ylium-5-olate ligand (H₂SQ) and its oxidized form 2,2′-cyclohexa-2,5-diene-1,4-diylidenebis(4,7-di-tert-butyl-1,3-benzodithiole-5,6-dione (Q). The chemical oxidation of H₂SQ in Q induced an increase in the coordination number from 7 to 8 around the Dy^III 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.

【 授权许可】

Unknown