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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/49391
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dc.creatorWillian Xerxes Coelho Oliveirapt_BR
dc.creatorCynthia Lopes Martins Pereirapt_BR
dc.creatorCarlos Basílio Pinheiropt_BR
dc.creatorFrancesc Lloretpt_BR
dc.creatorMiguel Julvept_BR
dc.date.accessioned2023-02-01T18:39:13Z-
dc.date.available2023-02-01T18:39:13Z-
dc.date.issued2018-
dc.citation.volume5pt_BR
dc.citation.issue6pt_BR
dc.citation.spage1294pt_BR
dc.citation.epage1306pt_BR
dc.identifier.doihttps://doi.org/10.1039/C8QI00191Jpt_BR
dc.identifier.issn2052-1553pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/49391-
dc.description.resumoFour compounds with the formula [M2(dmphen)4(μ-C2O4)](ClO4)2·2dmso [M = Fe (1), Co (2) and Zn (4); dmphen = 2,9-dimethyl-1,10-phenanthroline] and [Ni2(dmphen)4(μ-C2O4)]3[NbO(C2O4)3]2·16H2O (3) have been synthesized using the tris(oxalato)oxoniobate(V) complex anion as the oxalate source, and their structures have been determined by single crystal X-ray diffraction. X-ray quality crystals of highly insoluble oxalate-bridged species were obtained by taking advantage of the slow release of oxalate by the tris(oxalato)oxoniobate(V) complex anion. The structures of 1–4 all contain oxalate-bridged dimetal(II) units with didentate dmphen molecules acting as end-cap ligands; electroneutrality is achieved by perchlorate (1–4) and oxotris(oxalato)niobate(V) (3) anions. Each divalent metal ion in 1–4 is tris-chelated in a six-coordinate distorted octahedral environment. The niobium(V) ion in 3 is seven-coordinate in a distorted pentagonal bipyramidal geometry built from one oxo group and six oxygen atoms from three didentate oxalate ligands. The values of the metal–metal separation across the bis-chelating oxalate are 5.626(1) (1), 5.575(1) (2), 5.434(1) to 5.447(1) (3) and 5.603(1) Å (4). The cryomagnetic measurements in the temperature range of 2.0 to 300 K for compounds 1–3 show the occurrence of antiferromagnetic interactions between the divalent metal ions across the oxalate bridge. The nature and amplitude of these magnetic interactions are rationalized by simple symmetry considerations and compared with those previously reported for related oxalate-bridged systems.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofInorganic Chemistry Frontierspt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectOxalate-bridgedpt_BR
dc.subjectSynthetic routespt_BR
dc.subjectIronpt_BR
dc.subjectCobaltpt_BR
dc.subjectNickelpt_BR
dc.subjectZincpt_BR
dc.subjectSynthesispt_BR
dc.subjectCrystal x-ray diffractionpt_BR
dc.subjectMagnetic interactionspt_BR
dc.subject.otherQuímica inorgânicapt_BR
dc.subject.otherCristalografia de raio Xpt_BR
dc.subject.otherComplexos metálicospt_BR
dc.subject.otherFerropt_BR
dc.subject.otherCobaltopt_BR
dc.subject.otherNiquelpt_BR
dc.subject.otherZincopt_BR
dc.titleTowards oxalate-bridged iron(ii), cobalt(ii), nickel(ii) and zinc(ii) complexes through oxotris(oxalate)niobate(v): an open air non-oxidizing synthetic routept_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://pubs.rsc.org/en/content/articlelanding/2018/qi/c8qi00191jpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0722-5352pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3799-8092pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8674-1779pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2959-0879pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9006-8268pt_BR
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