| Autor: |
Saha, Pratap Kumar, Banerjee, Surajit, Saha, Sandip, Mukherjee, Alok Kumar, Sivasanker, Subramanian, Koner, Subratanath |
| Zdroj: |
Bulletin of the Chemical Society of Japan; April 2004, Vol. 77 Issue: 4 p709-714, 6p |
| Abstrakt: |
A new zeolite-immobilized copper(II) complex catalyst has been prepared by entrapping [CuL] [LH2= N,N′-(1,1-dimethylethylene)bis(salicylaldiimine)] on NaY zeolite matrix. The reaction of Cu–NaY and molten LH2affords a green mass of crude catalyst that upon a treatment with CH3CN gives a gray-colored hybrid catalyst (CuL–NaY). The prepared catalyst has been characterized by IR and UV–vis spectroscopic and EPR spectrometric measurements, TG–DTA analysis, powder X-ray diffraction, and surface-area measurements. To ascertain the structure of the immobilized complex, a single-crystal X-ray diffraction analysis of [CuL] was performed. Spectroscopic measurements showed that the green crude of CuL–NaY contains a penta- or hexa-coordinated copper(II) moiety, while the CuL–NaY catalyst contains a distorted square-planar [CuL] complex moiety. A remarkable catalytic activity of the prepared hybrid catalyst has been observed in oxidation reactions of 1-naphthol and norbornene. |
| Databáze: |
Supplemental Index |
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