Electrochemical behaviour of [Ru(4,4′-Me2bpy)2(PPh3)(H2O)](ClO4)2 in homogeneous solution and incorporated into a carbon paste electrode.: Application to oxidations of benzylic compounds

被引：59

作者：

Lima, EC ^{[1
]}

Fenga, PG ^{[1
]}

Romero, JR ^{[1
]}

De Giovani, WF ^{[1
]}

机构：

[1] Fac Filosofia Ciencias & Letras Ribeirao Pret, Dept Quim, BR-14040901 Ribeirao Preto, SP, Brazil

来源：

POLYHEDRON | 1998年 / 17卷 / 2-3期

基金：

巴西圣保罗研究基金会;

关键词：

ruthenium aquacomplex; electrocatalysis; electrooxidation; carbon paste electrode; alcohols; benzylic compounds;

D O I：

10.1016/S0277-5387(97)00306-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complex [Ru(4,4'-Me(2)bpy)(2)(PPh3)(H2O)](ClO4)(2) has been synthesized and characterized by elemental analysis, spectroscopic and electrochemical methods. E-1/2 vs pH studies are consistent with one-electron, one-proton transfer; at higher pH the potentials become pH independent. The catalytic activity of the complex has been investigated at pH 6.5 in the homogeneous electrooxidation of benzylic compounds. The reactivity was found to decrease in the order 1-phenylethanol much greater than phthalic alcohol > benzyl alcohol > 4-methylbenzyl alcohol > ethylbenzene > toluene. Carbon paste electrode (CPE) containing the complex has shown catalytic activity in oxidations of alcohols. Benzyl alcohol oxidation by CPE is first order on substrate concentration and for low concentrations is controlled by the diffusion rate of the substrate from solution. (C) 1997 Elsevier Science Ltd.

引用

页码：313 / 318

页数：6

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