Spectroscopic characterization of schiff base-copper complexes immobilized in smectite clays
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Data
2010-01-01
Autores
Dias, Patrícia M.
Kinouti, Lilian
Constantino, Vera R. L.
Ferreira, Ana M. D. C.
Gonçalves, Marcos B.
Nascimento, Rafael R. do
Petrilli, Helena M.
Caldas, Marília
Frem, Regina C. G. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Química
Resumo
Herein, the immobilization of some Schiff base-copper(II) complexes in smectite clays is described as a strategy for the heterogenization of homogeneous catalysts. The obtained materials were characterized by spectroscopic techniques, mostly UV/Vis, EPR, XANES and luminescence spectroscopy. SWy-2 and synthetic Laponite clays were used for the immobilization of two different complexes that have previously shown catalytic activity in the dismutation of superoxide radicals, and disproportionation of hydrogen peroxide. The obtained results indicated the occurrence of an intriguing intramolecular redox process involving copper and the imine ligand at the surface of the clays. These studies are supported by computational calculations.
Descrição
Palavras-chave
Schiff base-copper complexes, smectite clays, DFT calculation
Como citar
Química Nova. Sociedade Brasileira de Química, v. 33, n. 10, p. 2135-2142, 2010.