Towards oxalate-bridged iron(ii), cobalt(ii), nickel(ii) and zinc(ii) complexes through oxotris(oxalate)niobate(v): an open air non-oxidizing synthetic route

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dc.creatorWillian Xerxes Coelho Oliveira
dc.creatorCynthia Lopes Martins Pereira
dc.creatorCarlos Basílio Pinheiro
dc.creatorFrancesc Lloret
dc.creatorMiguel Julve
dc.date.accessioned2023-02-01T18:39:13Z
dc.date.accessioned2025-09-08T23:40:10Z
dc.date.available2023-02-01T18:39:13Z
dc.date.issued2018
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.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1039/C8QI00191J
dc.identifier.issn2052-1553
dc.identifier.urihttps://hdl.handle.net/1843/49391
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofInorganic Chemistry Frontiers
dc.rightsAcesso Restrito
dc.subjectQuímica inorgânica
dc.subjectCristalografia de raio X
dc.subjectComplexos metálicos
dc.subjectFerro
dc.subjectCobalto
dc.subjectNiquel
dc.subjectZinco
dc.subject.otherOxalate-bridged
dc.subject.otherSynthetic routes
dc.subject.otherIron
dc.subject.otherCobalt
dc.subject.otherNickel
dc.subject.otherZinc
dc.subject.otherSynthesis
dc.subject.otherCrystal x-ray diffraction
dc.subject.otherMagnetic interactions
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 route
dc.typeArtigo de periódico
local.citation.epage1306
local.citation.issue6
local.citation.spage1294
local.citation.volume5
local.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.
local.identifier.orcidhttps://orcid.org/0000-0003-0722-5352
local.identifier.orcidhttps://orcid.org/0000-0002-3799-8092
local.identifier.orcidhttps://orcid.org/0000-0002-8674-1779
local.identifier.orcidhttps://orcid.org/0000-0003-2959-0879
local.identifier.orcidhttps://orcid.org/0000-0001-9006-8268
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/2018/qi/c8qi00191j

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