Magneto-structural versatility of copper(II)-3- phenylpropionate coordination polymers with N-donor coligands

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dc.creatorNathália Rodrigues de Campos
dc.creatorMiguel Julve
dc.creatorJoan Cano
dc.creatorMaria Vanda Marinho
dc.creatorMarcos Antônio Ribeiro
dc.creatorWillian Xerxes Coelho Oliveira
dc.creatorDaniella Olandim Reis
dc.creatorHumberto Osório Stumpf
dc.creatorAntonio Carlos Doriguetto
dc.creatorFlávia Cavalieri Machado
dc.creatorCarlos Basílio Pinheiro
dc.creatorFrancesc Lloret
dc.date.accessioned2023-07-17T15:16:21Z
dc.date.accessioned2025-09-09T00:33:50Z
dc.date.available2023-07-17T15:16:21Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetos
dc.identifier.doihttps://doi.org/10.1039/c5dt03401a
dc.identifier.issn1477-9234
dc.identifier.urihttps://hdl.handle.net/1843/56384
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofDalton Transactions
dc.rightsAcesso Restrito
dc.subjectPolímeros
dc.subject.otherPolymers
dc.subject.otherMagneto-structural
dc.titleMagneto-structural versatility of copper(II)-3- phenylpropionate coordination polymers with N-donor coligands
dc.typeArtigo de periódico
local.citation.epage189
local.citation.spage172
local.citation.volume45
local.description.resumoA novel series of copper(II) coordination polymers [Cu2(O2CC8H9)4(pyz)]n (1), [Cu2(O2CC8H9)4(dps)]n (2), {[Cu(O2CC8H9)2(dps)(H2O)]·H2O}n (3), {[NaCu(O2CC8H9)2(bpm)(NO3)]·H2O}n (4), and [Cu4(O2CC8H9)6(OH)2(bpp)2]n (5) [O2CC8H9− = 3-phenylpropionate anion, pyz = pyrazine, dps = di(4-pyridyl)sulfide, bpm = 2,2′-bipyrimidine, and bpp = 1,3-bis(4-pyridyl)propane] have been synthesized and magneto-structurally investigated. Compounds 1 and 2 belong to a large group of copper(II) carboxylates where bis-monodentate pyz (1) and dps (2) ligands connect the paddle-wheel [CuII2(μ-O2CC8H9)4] units leading to alternating copper(II) chains. The structure of 3 consists of uniform chains of trans-[CuII(O2CC8H9)2] units linked by the bis-monodentate dps ligand. Compound 4 consists of heterobimetallic chains where [NaI2CuII2(μ-O2CC8H9)4(NO3)2] units are doubly bridged by bis-bidentate bpm ligands. Compound 5 is also a chain compound whose structure is made up by tetranuclear [CuII4(μ3-OH)2(μ-O2CC8H9)4(O2CC8H9)2] units which are doubly bridged by bis-monodentate bpp ligands. The magnetic properties were investigated in the temperature range 1.8–300 K. Strong antiferromagnetic interactions across the quadruple syn–syn carboxylate are observed in 1 and 2 [J = −378 (1) and −348 cm−1 (2)] whereas a weak ferromagnetic coupling through the double out-of-plane oxo(carboxylate) bridge occurs in 4 [J = +2.66 cm−1], the spin Hamiltonian being defined as H = −JS1·S2 with S1 = S2 = SCu = 1/2. A quasi Curie law is observed for 3 (θ = −0.36 cm−1), the bis-monodentate dps ligand being a very poor mediator of magnetic interactions. The analysis of the magnetic properties of 5 is quite complex because of the presence of two crystallographically independent tetracopper(II) units with single-μ-hydroxo, di-μ-hydroxo, μ3-hydroxo and single-μ-hydroxo plus double syn,syn carboxylate bridges in each one. The nature and values of the magnetic couplings for 5 obtained by fitting (intermediate, strong and weak antiferromagnetic interactions for the three former exchange pathways respectively, and intermediate ferromagnetic interactions for the latter one) were substantiated by DFT type calculations.
local.identifier.orcidhttps://orcid.org/0000-0003-1889-8800
local.identifier.orcidhttps://orcid.org/0000-0003-2189-9572
local.identifier.orcidhttps://orcid.org/0000-0002-9350-6419
local.identifier.orcidhttps://orcid.org/0000-0003-0722-5352
local.identifier.orcidhttps://orcid.org/0000-0001-7756-0987
local.identifier.orcidhttps://orcid.org/0000-0002-2726-1265
local.identifier.orcidhttps://orcid.org/0000-0002-8674-1779
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://pubs.rsc.org/en/content/articlelanding/2016/DT/C5DT03401A

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