Magneto-structural Versatility Of Copper(ii)-3-phenylpropionate Coordination Polymers With N-donor Coligands

dc.creatorde Campos
dc.creatorNathalia R.; Ribeiro
dc.creatorMarcos A.; Oliveira
dc.creatorWillian X. C.; Reis
dc.creatorDaniella O.; Stumpf
dc.creatorHumberto O.; Doriguetto
dc.creatorAntonio C.; Machado
dc.creatorFlavia C.; Pinheiro
dc.creatorCarlos B.; Lloret
dc.creatorFrancesc; Julve
dc.creatorMiguel; Cano
dc.creatorJoan; Marinho
dc.creatorMaria V.
dc.date2016
dc.date2016-06-07T13:22:51Z
dc.date2016-06-07T13:22:51Z
dc.date.accessioned2018-03-29T01:42:23Z
dc.date.available2018-03-29T01:42:23Z
dc.identifier
dc.identifierMagneto-structural Versatility Of Copper(ii)-3-phenylpropionate Coordination Polymers With N-donor Coligands. Royal Soc Chemistry, v. 45, p. 172-189 2016.
dc.identifier1477-9226
dc.identifierWOS:000366429000019
dc.identifier10.1039/c5dt03401a
dc.identifierhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/DT/C5DT03401A#!divAbstract
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/243267
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1306965
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionA novel series of copper(II) coordination polymers [Cu-2(O2CC8H9)(4)(pyz)](n) (1), [Cu-2(O2CC8H9)(4)(dps)](n) (2), {[Cu(O2CC8H9)(2)(dps)(H2O)]center dot H2O}(n) (3), {[NaCu(O2CC8H9)(2)(bpm)(NO3)]center dot H2O}(n) (4), and [Cu-4(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 [Cu-2(II)(mu-O2CC8H9)(4)] units leading to alternating copper(II) chains. The structure of 3 consists of uniform chains of trans-[Cu-II(O2CC8H9)(2)] units linked by the bis-monodentate dps ligand. Compound 4 consists of heterobimetallic chains where [(Na2Cu2II)-Cu-I(mu-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 [Cu-4(II)(mu(3)-OH)(2)(mu-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 = -JS(1).S-2 with S-1 = S-2 = S-Cu = 1/2. A quasi Curie law is observed for 3 (theta = -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-mu-hydroxo, di-mu-hydroxo, mu(3)-hydroxo and single-mu-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.
dc.description45
dc.description1
dc.description
dc.description172
dc.description189
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFINEP [134/08]
dc.descriptionBrazilian-Spanish Project [HB2014-00024]
dc.descriptionMinisterio Espanol de Economia y Competitividad [CTQ2013-44844P]
dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.descriptionMinisterio Espanol de Economia y Competitividad (Unidad de Excelencia) [MDM-2015-0538]
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description
dc.description
dc.description
dc.languageen
dc.publisherROYAL SOC CHEMISTRY
dc.publisher
dc.publisherCAMBRIDGE
dc.relationDALTON TRANSACTIONS
dc.rightsaberto
dc.sourceWOS
dc.subjectTransition-metal-complexes
dc.subjectExchange Coupling-constants
dc.subjectX-ray-structure
dc.subjectBridged Copper(ii) Dimers
dc.subjectGaussian-basis Sets
dc.subjectMagnetic-properties
dc.subjectCrystal-structure
dc.subjectNoncovalent Interactions
dc.subjectCarboxylato Bridges
dc.subjectBinuclear Complexes
dc.titleMagneto-structural Versatility Of Copper(ii)-3-phenylpropionate Coordination Polymers With N-donor Coligands
dc.typeArtículos de revistas


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