Oxidative dimerization of Ru(III)-EDTA complex on the surface of functionalized silica gel

被引：9

作者：

Codognoto, LC ^{[1
]}

Zanichelli, PG ^{[1
]}

Sernaglia, RL ^{[1
]}

机构：

[1] Univ Estadual Maringa, Dept Quim, BR-87020900 Maringa, Parana, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2005年 / 16卷 / 3B期

关键词：

Ru( III)-EDTA complex dimerization; modified silica gel; silica immobilized ruthenium edta dimer;

D O I：

10.1590/S0103-50532005000400020

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The present paper deals with the reaction of oxidative dimerization of the H[Ru(III)Cl-2(H(2)EDTA)]. 4.5 H2O complex on the surface of silica gel functionalized (SF) with [3-(2-aminoethyl) aminopropyl] trimethoxysilane (AEATS), generating the dimeric ( EDTA)(2)Ru-2(IV, IV) complex immobilized on the surface of this silica through the coordination with amide bonds. The oxidation of water by the anchored dimeric complex proceeded rapidly and was observed by the evolution of O-2 and the decrease in pH, yielding the SF-AEATS/(EDTA)(2)Ru-2(III1/2, III1/2). This anchored dimer was characterized by electronic, vibrational and EPR spectroscopies. The electrochemical behavior of a modified carbon paste electrode prepared with SF-AEATS/ (EDTA)(2)Ru-2(III1/2, III1/2) was also studied.

引用

页码：620 / 625

页数：6

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