Single-molecule magnet behaviour in a tetranuclear Dy III complex formed from a novel tetrazine-centered hydrazone Schiff base ligand
| Autor: | Wolfgang Wernsdorfer, Muralee Murugesu, Amélie Pialat, Yanhua Lan, Thomas Lacelle, Gabriel Brunet, I. Korobkov, Bulat Gabidullin, Rebecca J. Holmberg |
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| Přispěvatelé: | Institut für Anorganishe Chemie (INSTITUT FüR ANORGANISHE CHEMIE), Institut für Anorganische Chemie der Karlsruhe, Engesserstrasse Geb., Circuits électroniques quantiques Alpes (QuantECA ), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Lanthanide
chemistry.chemical_classification Schiff base 010405 organic chemistry Hydrazone Crystal structure 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Tetrazine chemistry.chemical_compound Crystallography Nuclear magnetic resonance chemistry Ferromagnetism Moiety [CHIM]Chemical Sciences Single-molecule magnet ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Dalton Transactions Dalton Transactions, Royal Society of Chemistry, 2017, 46 (8), pp.2471-2478. ⟨10.1039/C6DT04413A⟩ |
| ISSN: | 1477-9226 1477-9234 |
| Popis: | Two analogous tetranuclear lanthanide complexes have been synthesized with the general formula [Ln4(vht)4(MeOH)8](NO3)4·aMeOH·bH2O, where H2vht = (3,6-bis(vanillidenehydrazinyl)-1,2,4,5-tetrazine) and Ln = DyIII (1), GdIII (2). These complexes are characterized by several techniques; including single-crystal X-ray diffraction, SQUID magnetometry and single-crystal micro-SQUID hysteresis loop measurements. Elucidation of the crystal structure of the complexes shows that the lanthanide ions are bridged by a tetrazine ring, a rare bridging moiety for lanthanide ions. Magnetic studies reveal that both 1 and 2 exhibit weak ferromagnetic exchange interactions between Ln ions, and 1 displaying Single-Molecule Magnet (SMM) behaviour with a magnetisation reversal barrier of Ueff = 158 K (τ0 = 1.06 × 10−7 s). |
| Databáze: | OpenAIRE |
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