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Article Dans Une Revue Magnetochemistry Année : 2020

Redox modulation of field-induced tetrathiafulvalene-based single-molecule magnets of dysprosium

Résumé

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 DyIII 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. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

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Chimie
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hal-03003315 , version 1 (13-11-2020)

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S. Tiaouinine, J.F. Gonzalez, V. Montigaud, C.A. Mattei, V. Dorcet, et al.. Redox modulation of field-induced tetrathiafulvalene-based single-molecule magnets of dysprosium. Magnetochemistry, 2020, 6 (3), pp.1-13. ⟨10.3390/magnetochemistry6030034⟩. ⟨hal-03003315⟩
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