Probing the structural and magnetic properties of a new family of centrosymmetric dinuclear lanthanide complexes
| Autor: | Muralee Murugesu, Liviu Ungur, Liviu F. Chibotaru, Rebecca J. Holmberg, Fatemah Habib, I. Korobkov, Y. Jiang |
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| Rok vydání: | 2016 |
| Předmět: |
Lanthanide
Lanthanide contraction 010405 organic chemistry Chemistry General Chemical Engineering Relaxation (NMR) General Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences Ion Crystallography Magnetization Ab initio quantum chemistry methods Computational chemistry Intramolecular force Antiferromagnetism |
| Zdroj: | RSC Advances. 6:56668-56673 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c6ra12070a |
| Popis: | A series of centrosymmetric dinuclear lanthanide complexes, including GdIII (1), DyIII (2), HoIII (3), ErIII (4) and YbIII (5), have been synthesized and studied for the effects of lanthanide contraction on their magnetic properties. As a result of probing the magnetic properties of the GdIII analogue, 1, a weak antiferromagnetic intramolecular interaction was confirmed, with J = −0.01 cm−1 and g = 2.01. The DyIII complex, 2, was found to exhibit larger values of gx and gy in the ground doublet of individual DyIII ions via ab initio calculations, and thus did not act as a SMM. Interestingly, the ErIII (4) and YbIII (5) complexes exhibited slow relaxation of the magnetization under an applied dc field with effective energy barriers (Ueff) of 21 K and 22 K, respectively. |
| Databáze: | OpenAIRE |
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