Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier

Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2∙2THF, and the pyridine adducts Dy2∙2Py and Ho2∙2Py, show that the complexes are dinuclear, with unsupported double phenoxide bridges, and that the N4O4 e...

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Autores: Fondo Busto, María Matilde, Corredoira Vázquez, Julio, García Deibe, Ana María, Sanmartín Matalobos, Jesús, Gómez-Coca, Silvia, Ruíz, Eliseo, Colacio, Enrique
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/31910
Acceso en línea:http://hdl.handle.net/10347/31910
Access Level:acceso abierto
Palabra clave:230307 Compuestos de coordinación
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spelling Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrierFondo Busto, María MatildeCorredoira Vázquez, JulioGarcía Deibe, Ana MaríaSanmartín Matalobos, JesúsGómez-Coca, SilviaRuíz, EliseoColacio, Enrique230307 Compuestos de coordinaciónDinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2∙2THF, and the pyridine adducts Dy2∙2Py and Ho2∙2Py, show that the complexes are dinuclear, with unsupported double phenoxide 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 phenoxide‐bridged dinuclear dysprosium complexes to date. Ho2is one of the scarce dinuclear complexes showing frequency‐dependence for the out‐of‐phase component of susceptibility, although it does not even show field‐induced SMM behaviour above 2 K. Ab initio calculations were done in order to shed light on the magnetic dynamics of the complexes, and these studies support the experimental magnetic results.The Royal Society of ChemistryUniversidade de Santiago de Compostela. Departamento de Química Inorgánica20212021-01-0120212021-01-01journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10347/31910reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostelainstname:Universidad de Santiago de Compostela (USC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:minerva.usc.gal:10347/319102026-06-15T12:47:27Z
dc.title.none.fl_str_mv Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
title Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
spellingShingle Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
Fondo Busto, María Matilde
230307 Compuestos de coordinación
title_short Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
title_full Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
title_fullStr Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
title_full_unstemmed Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
title_sort Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier
dc.creator.none.fl_str_mv Fondo Busto, María Matilde
Corredoira Vázquez, Julio
García Deibe, Ana María
Sanmartín Matalobos, Jesús
Gómez-Coca, Silvia
Ruíz, Eliseo
Colacio, Enrique
author Fondo Busto, María Matilde
author_facet Fondo Busto, María Matilde
Corredoira Vázquez, Julio
García Deibe, Ana María
Sanmartín Matalobos, Jesús
Gómez-Coca, Silvia
Ruíz, Eliseo
Colacio, Enrique
author_role author
author2 Corredoira Vázquez, Julio
García Deibe, Ana María
Sanmartín Matalobos, Jesús
Gómez-Coca, Silvia
Ruíz, Eliseo
Colacio, Enrique
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de Santiago de Compostela. Departamento de Química Inorgánica
dc.subject.none.fl_str_mv 230307 Compuestos de coordinación
topic 230307 Compuestos de coordinación
description Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2∙2THF, and the pyridine adducts Dy2∙2Py and Ho2∙2Py, show that the complexes are dinuclear, with unsupported double phenoxide 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 phenoxide‐bridged dinuclear dysprosium complexes to date. Ho2is one of the scarce dinuclear complexes showing frequency‐dependence for the out‐of‐phase component of susceptibility, although it does not even show field‐induced SMM behaviour above 2 K. Ab initio calculations were done in order to shed light on the magnetic dynamics of the complexes, and these studies support the experimental magnetic results.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10347/31910
url http://hdl.handle.net/10347/31910
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The Royal Society of Chemistry
publisher.none.fl_str_mv The Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname:Universidad de Santiago de Compostela (USC)
instname_str Universidad de Santiago de Compostela (USC)
reponame_str Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
collection Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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