Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier

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 Dinucle...

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Authors: Fondo, Matilde, Corredoira-Vázquez, Julio, García-Deibe, Ana M., Sanmartín, Jesús, Gómez Coca, Silvia, Ruiz Sabín, Eliseo, Colacio, Enrique
Format: article
Status:Versión aceptada para publicación
Publication Date:2021
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/180568
Online Access:https://hdl.handle.net/2445/180568
Access Level:Open access
Keyword:Imants
Magnetisme
Lligands
Magnets
Magnetism
Ligands
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spelling Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrierFondo, MatildeCorredoira-Vázquez, JulioGarcía-Deibe, Ana M.Sanmartín, JesúsGómez Coca, SilviaRuiz Sabín, EliseoColacio, EnriqueImantsMagnetismeLligandsMagnetsMagnetismLigandsSlow 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.Royal Society of Chemistry2021202220212021info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion10 p.application/pdfhttps://hdl.handle.net/2445/180568Articles publicats en revistes (Química Inorgànica i Orgànica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1039/d1qi00152cInorganic Chemistry Frontiers, 2021, vol. 8, num. 10, p. 2532-2541https://doi.org/10.1039/d1qi00152c(c) Royal Society of Chemistry, 2021info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1805682026-05-29T05:05:01Z
dc.title.none.fl_str_mv Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
title Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
spellingShingle Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
Fondo, Matilde
Imants
Magnetisme
Lligands
Magnets
Magnetism
Ligands
title_short Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
title_full Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
title_fullStr Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
title_full_unstemmed Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
title_sort Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: A Dy2single molecule magnet with a high energy barrier
dc.creator.none.fl_str_mv Fondo, Matilde
Corredoira-Vázquez, Julio
García-Deibe, Ana M.
Sanmartín, Jesús
Gómez Coca, Silvia
Ruiz Sabín, Eliseo
Colacio, Enrique
author Fondo, Matilde
author_facet Fondo, Matilde
Corredoira-Vázquez, Julio
García-Deibe, Ana M.
Sanmartín, Jesús
Gómez Coca, Silvia
Ruiz Sabín, Eliseo
Colacio, Enrique
author_role author
author2 Corredoira-Vázquez, Julio
García-Deibe, Ana M.
Sanmartín, Jesús
Gómez Coca, Silvia
Ruiz Sabín, Eliseo
Colacio, Enrique
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Imants
Magnetisme
Lligands
Magnets
Magnetism
Ligands
topic Imants
Magnetisme
Lligands
Magnets
Magnetism
Ligands
description 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.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/180568
url https://hdl.handle.net/2445/180568
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1039/d1qi00152c
Inorganic Chemistry Frontiers, 2021, vol. 8, num. 10, p. 2532-2541
https://doi.org/10.1039/d1qi00152c
dc.rights.none.fl_str_mv (c) Royal Society of Chemistry, 2021
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Royal Society of Chemistry, 2021
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10 p.
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv Articles publicats en revistes (Química Inorgànica i Orgànica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869417511363018752
score 15,81155

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