New metal-organic systems with a functionalized oxamate-type ligand and MnII, FeII, CuII and ZnII

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dc.creatorMaciel, Jhonny Willians de Oliveira
dc.creatorKalinke, Lucas Hoffmann Greghi
dc.creatorValdo, Ana Karoline Silva Mendanha
dc.creatorMartins, Felipe Terra
dc.creatorSouza Filho, Renato Rabelo de
dc.creatorMoliner Ruiz, Fernando Nicolás
dc.creatorCano Boquera, Joan
dc.creatorJulve Olcina, Miguel
dc.creatorLloret Pastor, Francesc
dc.creatorGomes, Danielle Cangussu de Castro
dc.creatorKalinke, Lucas Hoffmann Greghi
dc.date.accessioned2023-10-17T14:45:29Z
dc.date.available2023-10-17T14:45:29Z
dc.date.issued2019
dc.description.abstractFour new complexes of formula [Fe(H2pcpa)2(H2O)2] (1), {[Mn(Hpcpa)(H2O)3]•1/2H2O}n (2), {[Zn(Hpcpa)(H2O)3]•1/2H2O}n (3) and [Cu2(Hpcpa)2(bipy)2]•8H2O (4) [H3pcpa=N-(4-carboxyphenyl) oxamic acid; bipy = 2,2′-bipyridine] have been synthesized and their structures determined by X-ray diffraction. The structure of 1 consists of mononuclear iron(II) units where each iron(II) ion is six-coordinate by two trans-positioned water molecules and two bidentate H2pcpa− ligands building a distorted octahedral environment. 2 and 3 consist of neutral zigzag chains of MnII and ZnII ions respectively, the Hpcpa2− groups acting as linkers in a bidentate/monodentate coordination mode with three mer-positioned water molecules achieving the six-coordination around the metal centers. Compound 4 is a neutral centrosymmetric dicopper(II) complex where two Hpcpa2− groups adopting the bidentate/monodentate coordination mode and act as bridges and bidentate bipy molecules act as end-cap ligands, describing a square pyramidal surrounding around each copper atom. Cryomagnetic measurements for 1, 2 and 4 in the temperature range 1.9-300 K reveal the occurrence of a field-induced single-ion magnet (SIM) behavior (1) and weak interchain (J = –0.22 cm–1, 2) and intradimer (J = –0.39 cm–1, 4) antiferromagnetic interactions, the Hamiltonian being defined as H = –J Sa . Sb.
dc.identifier.citationMACIEL, Jhonny W. et al. New metal-organic systems with a functionalized oxamate-type ligand and MnII, FeII, CuII and ZnII. Journal of the Brazilian Chemical Society, Campinas, v. 30, n. 11, p. 2413-2429, 2019. DOI: 10.21577/0103-5053.20190158. Disponível em: https://jbcs.sbq.org.br/default.asp?ed=291. Acesso em: 29 set. 2023.
dc.identifier.doi10.21577/0103-5053.20190158
dc.identifier.issne- 1678-4790
dc.identifier.issn0103-5053
dc.identifier.urihttp://repositorio.bc.ufg.br//handle/ri/23627
dc.language.isoeng
dc.publisher.countryBrasil
dc.publisher.departmentInstituto de Química - IQ (RMG)
dc.rightsAcesso Aberto
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectIron(II)
dc.subjectManganese(II)
dc.subjectZinc(II)
dc.subjectCopper(II)
dc.subjectOxamate
dc.subjectMagnetic properties
dc.subjectSingleion magnet
dc.titleNew metal-organic systems with a functionalized oxamate-type ligand and MnII, FeII, CuII and ZnII
dc.typeArtigo

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