Detalhes bibliográficos
| Ano de defesa: |
2019 |
| Autor(a) principal: |
Kalinke, Lucas Hoffmann Greghi
 |
| Orientador(a): |
Gomes, Danielle Cangussu de Castro
|
| Banca de defesa: |
Gomes, Danielle Cangussu de Castro,
Barros, Wdeson Pereira,
Oliveira, Cecília Maria Alves de,
Santana, Ricardo Costa de,
Martins, Felipe Terra |
| Tipo de documento: |
Tese
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| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Programa de Pós-graduação em Química (IQ)
|
| Departamento: |
Instituto de Química - IQ (RG)
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/11108
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Resumo: |
This present work presents the synthesis and characterization of some coordination compounds containing oxamato ligands with different topologies. The precursor 1 and the chain (1D) Mn-Cu (7) with the H2Et2npbo ligand [npbo= N,N’-(naphtalene-1,8-diyl)-bis(oxamato)], the plane (2D) Ca3-Cu9 (8) with the H2Et2dabtzo ligand [dabtzo= N,N'-(4,4'-bithiazole-2,2'-diyl)-bis(oxamato)] and the 3D polymers M6-Co4 [M= Ca (9), Dy (10), Er (11) Ho(12) e Tb(13)] all of them with the H3Et3tpatox ligand [tpatox= N,N',N''-(nitrilotris(phenilene-4,1-diyl))-tris(oxamato)]. In addition were prepared precursor complexes of Cu(II) (2 and 3) and Co(II) (4) also with the H2Et2dabtzo ligand and the Ni(II) complex (6) with the H4Et4topp ligand [topp= N,N’,N’’,N’’’-tetrakis(4-aminophenyl)porphyrin-tetrakis(oxamato)]. The crystal structures of 2, 4, 7-12 were determined by single-crystal X ray diffraction. The magnetic properties of 8 have shown that Cu9 unit behaves as a trimer of trimers with different magnetic exchange paths between the Cu(II) ions. The magnetic properties for the polymers 10-13 reveal the behavior as magnetically isolated lanthanide ion with ground 6H15/2 (DyIII), 4I15/2 (ErIII), 5I8 (HoIII) e 7F6(TbIII); with Mj= ±½ (10 e 11) and Mj= 0 (12 e 13). Furthermore, the polymeric compounds 10 e 11 have shown slow magnetic relaxation with Ea and been determined by the Arrhenius law. |
