Redox chemistry of copper complexes with various salen type ligands

被引：32

作者：

Butsch, Katharina ^{[1
]}

Guenther, Thomas ^{[2
]}

Klein, Axel ^{[1
]}

Stirnat, Kathrin ^{[1
]}

Berkessel, Albrecht ^{[2
]}

Neudoerfl, Joerg ^{[2
]}

机构：

[1] Univ Cologne, Inst Anorgan Chem, Dept Chem, D-50939 Cologne, Germany

[2] Univ Cologne, Inst Organ Chem, Dept Chem, D-50939 Cologne, Germany

来源：

INORGANICA CHIMICA ACTA | 2013年 / 394卷

关键词：

Salen ligands; Copper(II); Electrochemistry; EPR; Spectroelectrochemistry; Alcohol oxidation; CATALYZED ASYMMETRIC EPOXIDATION; X-RAY STRUCTURES; GALACTOSE-OXIDASE; SCHIFF-BASE; PRIMARY ALCOHOLS; KINETIC RESOLUTION; HYDROGEN-PEROXIDE; HENRY REACTION; ACTIVE-SITE; OXIDATION;

D O I：

10.1016/j.ica.2012.08.016

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The two essential redox processes in Cu(II) salen (and salan) complexes Cu(II)/Cu(I) and [PhO](center dot)/[PhO[-]] were studied by electrochemical and spectroelectrochemical (UV-Vis-absorption or EPR) techniques on a series of complexes in which the salen (salan) type ligands bear various substituents R = H, F, Ph, tBu or CH3 on the linker C- or N-atoms or on the phenol core. The substitution pattern can be related to the stability of the phenoxy radicals. The geometry of the complexes (especially around the Cu atom) could be established by XRD for the new complex [(Me(2)salhexF(4))Cu] {H-2(Me(2)salhexF(4)) = (1R,2R)-N,N'-bis(2-hydroxy-3,5-di-fluoro-acetophenonylidene)-cyclohexane-1,2-diamine} in the solid and for all other derivatives by EPR in fluid solution. Also, the application of the complexes in oxidation catalysis was tested using the oxidation of benzyl alcohol. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：237 / 246

页数：10

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