Files
Document type
ArticleVersion
Accepted versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/154825
Mononuclear lanthanide complexes with 18-crown-6 ether: synthesis, characterization, magnetic properties, and theoretical studies
Journal Title
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
A family of lanthanide metal complexes with general formula [Ln(H2O)3(18-crown-6)](ClO4)3 (Ln: TbIII, DyIII, ErIII and YbIII) has been synthesized. Their magnetic properties have been characterized by DC and AC SQUID measurements and analyzed with the help of CASSCF-type calculations. The DyIII and YbIII compounds show slow relaxation of the magnetization under an external magnetic field. The analysis of the dependence of the relaxation time with the temperature and external magnetic field reveals that the main contributions are respectively the quantum tunneling and the Raman term, respectively. The analysis of the beta electron density and electrostatic potentials indicate that the axial ligands (three water molecules) generate a relatively small repulsion with the lanthanide electron density being the reason of the moderate magnetic anisotropy found in these systems.
Subject (English)
Citation
Citation
MAXWELL VILLACORTA, Lindley Andrés, AMOZA DÁVILA, Martín and RUIZ SABÍN, Eliseo. Mononuclear lanthanide complexes with 18-crown-6 ether: synthesis, characterization, magnetic properties, and theoretical studies. Inorganic Chemistry. 2018. Vol. 57, num. 21, pags. 13225-13234. ISSN 0020-1669. [consulted: 14 of June of 2026]. Available at: https://hdl.handle.net/2445/154825