Document type
ArticleVersion
Accepted versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/180568
Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
Journal Title
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxo bridged complexes: a Dy2 single molecule magnet with a high energy barrier Matilde Fondo,a,* Julio Corredoira-Vázquez,a Ana M. García-Deibe,a Jesús Sanmartín-Matalobos,a Silvia Gómez-Coca,b Eliseo Ruizb and Enrique Colacioc Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated and recrystallised in pyridine. The crystal structures of Dy2·2THF and the pyridine adducts Dy2·2Py and Ho2·2Py show that the complexes are dinuclear, with unsupported double phenoxo bridges, and that the N4O4 environment of the LnIII centres is distorted triangular dodecahedral. The magnetic analysis of Dy2 and Ho2 shows that Dy2 is a single molecular magnet (SMM), with a thermal-activated zero-field effective energy barrier (Ueff) of 367.7 K, the largest barrier shown by double unsupported phenoxo-bridged dinuclear dysprosium complexes. Ho2 is one of the scarce dinuclear complexes showing slow relaxation of the magnetisation, although it does not even show field-induced SMM behaviour. Ab initio calculations were done in order to shed light on the magnetic anisotropy of the complexes and the magnetic relaxation pathways, which support the experimental magnetic results.
Subject
Citation
Citation
FONDO, Matilde, et al. Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier. Inorganic Chemistry Frontiers. 2021. Vol. 8, num. 10, pags. 2532-2541. ISSN 2052-1553. [consulted: 11 of June of 2026]. Available at: https://hdl.handle.net/2445/180568