Calixarene-like lanthanide single-ion magnets based on ndiii, gdiii, tbiii and dyiii oxamato complexes

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dc.creatorTamyris Teixeira da Cunha
dc.creatorMeiry Edivirges Alvarenga
dc.creatorJoão Honorato de Araujo-Neto
dc.creatorFelipe Terra Martins
dc.creatorEmerson Fernandes Pedroso
dc.creatorDavor Lopes Mariano
dc.creatorWallace de Castro Nunes
dc.creatorNicolás Moliner
dc.creatorFrancesc Lloret Pastor
dc.creatorMiguel Julve
dc.creatorCynthia Lopes Martins Pereira
dc.date.accessioned2026-01-30T14:36:13Z
dc.date.issued2024
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipFAPERJ - Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.3390/magnetochemistry10120103
dc.identifier.issn2312-7481
dc.identifier.urihttps://hdl.handle.net/1843/1536
dc.languageInglêspt_BR
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofMagnetochemistry
dc.rightsAcesso aberto
dc.subjectMateriais magneticos
dc.subjectCompostos de lantanio
dc.subjectQuímica supramolecular
dc.subjectCompostos de neodimio
dc.subject.otherOxamate
dc.subject.otherLanthanide
dc.subject.otherSingle-ion magnet
dc.subject.otherSupramolecular chemistry
dc.subject.otherNeodymium(III
dc.subject.otherGadolinium(III)
dc.subject.otherTerbium(III
dc.subject.otherDysprosium(III)
dc.titleCalixarene-like lanthanide single-ion magnets based on ndiii, gdiii, tbiii and dyiii oxamato complexespt_BR
dc.typeArtigo de periódico
local.citation.issue12
local.citation.spage103
local.citation.volume10
local.creator.IDG-3184-2012
local.creator.IDFOK-9318-2022
local.creator.Latteshttp://lattes.cnpq.br/7848078737558409
local.creator.Latteshttp://lattes.cnpq.br/3415730412834731
local.creator.Latteshttp://lattes.cnpq.br/7509592817745359
local.creator.Latteshttp://lattes.cnpq.br/0466799995060671
local.creator.Lattesttp://lattes.cnpq.br/2158176306442308
local.creator.Latteshttp://lattes.cnpq.br/3978324546228760
local.creator.Latteshttp://lattes.cnpq.br/1965260558843558
local.creator.Latteshttp://lattes.cnpq.br/4334534811258685
local.description.resumoIn this work, we describe the synthesis, crystal structures and magnetic properties of four air-stable mononuclear lanthanide(III) complexes with the N-(2,4,6-trimethylphenyl)oxamate (Htmpa) of formula: n-Bu4N[Nd(Htmpa)4(H2O)]·4H2O (1), n-Bu4N[Gd(Htmpa)4(H2O)]·3DMSO·2H2O (2), n-Bu4N[Tb(Htmpa)4(H2O)]·3DMSO·1H2O (3) and n-Bu4N[Dy(Htmpa)4(H2O)]·3DMSO·2H2O (4) (n-Bu4N+ = n-tetrabutylammonium; DMSO = dimethylsulfoxide). Their crystal structures reveal the occurrence of calixarene-type monoanionic species containing all-cis-disposed Htmpa ligands and one water molecule coordinated with the respective LnIII ion (Ln = Nd, Gd, Tb and Dy), featuring a nine-coordinated environment with muffin (MFF-9) (1) or spherical-capped square antiprism (CSAPR-9) (2–4) geometry. The major difference between their crystal structures is related to the nature of crystallization solvent molecules, either water (1) or both DMSO and water (2–4). The intermolecular hydrogen bonds among the self-complementary Htmpa ligands in all four compounds mediated a 2 D supramolecular network in the solid state. Direct-current (dc) magnetic properties for 1–4 show typical behavior for the ground state terms of the LnIII ions [4I9/2 (Nd); 8S7/2(Gd), 7F6 (Tb), 6H15/2 (Dy)]. Alternating-current (ac) magnetic measurements reveal the presence of slow magnetic relaxation without the presence of a dc field only for 4. In contrast, field-induced slow magnetic relaxation behavior was found in complexes 1, 2 and 3.
local.identifier.orcidhttps://orcid.org/0000-0002-3224-2624
local.identifier.orcidhttps://orcid.org/0000-0002-1127-6083
local.identifier.orcidhttps://orcid.org/0000-0002-3686-7779
local.identifier.orcidhttps://orcid.org/0000-0001-9004-0927
local.identifier.orcidhttps://orcid.org/0000-0001-8379-6638
local.identifier.orcidhttps://orcid.org/0000-0002-6863-9404
local.identifier.orcidhttps://orcid.org/0000-0002-9908-2098
local.identifier.orcidhttps://orcid.org/0000-0003-2959-0879
local.identifier.orcidhttps://orcid.org/0000-0001-9006-8268
local.identifier.orcidhttps://orcid.org/0000-0002-3799-8092
local.publisher.countryBrasil
local.publisher.departmentICEX - INSTITUTO DE CIÊNCIAS EXATAS
local.publisher.initialsUFMG
local.subject.cnpqCIENCIAS EXATAS E DA TERRA
local.url.externahttps://www.mdpi.com/2312-7481/10/12/103

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