Complexos dinucleares de Co(II) baseados em derivados do ligante bis-salen como pr...
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| Texto completo | |
| Autor(es): Mostrar menos - |
Reis, V, Natalia
;
Marinho, Maria Vanda
[1]
;
Simoes, Tatiana Renata G.
[2]
;
Metz, Karina C.
[2]
;
Vaz, Raphael C. A.
[3]
;
Oliveira, Willian X. C.
[3]
;
Pereira, Cynthia L. M.
[3]
;
Barros, Wdeson P.
[4]
;
Pinheiro, Carlos B.
[5]
;
Giese, Siddhartha O. K.
[2]
;
Hughes, David L.
[6]
;
Pirota, Kleber R.
[7]
;
Nunes, Wallace C.
[8]
;
Stumpf, Humberto O.
[3]
Número total de Autores: 14
|
| Afiliação do(s) autor(es): | [1] Univ Fed Alfenas, Inst Quim, BR-37130001 Alfenas, MG - Brazil
[2] Univ Fed Parana, Dept Quim, BR-81531980 Curitiba, Parana - Brazil
[3] Reis, Natalia, V, Univ Fed Minas Gerais, Dept Quim, ICEx, BR-31270901 Belo Horizonte, MG - Brazil
[4] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP - Brazil
[5] Univ Fed Minas Gerais, Dept Fis, ICEx, BR-31270901 Belo Horizonte, MG - Brazil
[6] Univ East Anglia, Sch Chem, Norwich NR4 7TJ, Norfolk - England
[7] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Dept Fis Mat Condensada, BR-13083970 Campinas, SP - Brazil
[8] Univ Fed Fluminense, Inst Fis, Av Gal Milton Tavares de Souza S-N, BR-24210346 Niteroi, RJ - Brazil
Número total de Afiliações: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Polyhedron; v. 171, p. 203-211, OCT 1 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
The reaction between the ligand di(4-pyridyl)sulfide (dps) and two salts of divalent first row transition metals (M = Co2+, and Cu2+) resulted in three new compounds with formula: {[}Co(dps)(4)(H2O)(2)](ClO4)(2)center dot H2O (1), {[}Cu(dps)(2)(dmso)(2)](n)(ClO4)(2n) (2) and {[}[Cu(dps)(2)(dmso)(2)][Cu(dps)(2)(dmso)(H2O)]](n)(ClO4)(4n)center dot 2nH(2)O center dot n(dmso) (3). Crystal structures of 1-3 were determined using single-crystal X-ray diffraction. Crystal structure of 1 consists of a mononuclear complex, in which the dps ligand acts in a monodentate mode through one of the pyridyl nitrogen atoms. Compounds 2 and 3 present the dps ligands bridging metal centers leading to bidimensional coordination polymers. Magnetic properties in the polycrystalline samples of 1-3 in the 300-2 K temperature range were investigated. Complex 1 exhibits a field-induced slow magnetization behavior and behaves as a single-ion magnet with an effective energy barrier for the reversal of magnetization of 22.9 (1.1) K and tau(0) = 5.3(1.2) x 10(-7) s. (C) 2019 Elsevier Ltd. All rights reserved. (AU) | |
| Processo FAPESP: | 15/22379-7 - Sistemas magnéticos moleculares multifuncionais: preparação e estudo das propriedades magnéticas, luminescentes e fotorreativas de complexos polinucleares contendo íons metálicos de transição e lantanídeos |
| Beneficiário: | Wdeson Pereira Barros |
| Linha de fomento: | Auxílio à Pesquisa - Regular |