Spectroscopic characterization of schiff base-copper complexes immobilized in smectite clays

Química Nova

Patrícia M. Dias²  Lilian Kinouti²  Vera R. L. Constantino²  Ana M. D. C. Ferreira²  Marcos B. Gonçalves¹  Rafael R. Do Nascimento¹  Helena M. Petrilli¹  Marília Caldas¹  Regina C. G. Frem¹ 

[1] ,Universidade de São Paulo Instituto de Química Departamento de Química FundamentalSão Paulo SP ,Brasil

关键词: Schiff base-copper complexes;    smectite clays;    DFT calculation;   

DOI  :  10.1590/S0100-40422010001000025

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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