Evidence for the involvement of CrII and free radicals as intermediates in the reduction of HCrO4- by saccharides, alcohols and hydroxyacids

被引：14

作者：

Gonzalez, Juan Carlos ^{[1
]}

Garcia, Silvia ^{[1
]}

Mamana, Nadia ^{[1
]}

Sala, Luis F. ^{[1
]}

Signorella, Sandra ^{[1
]}

机构：

[1] UNR, Fac Ciencias Bioquim & Farmaceut, Dept Quim, Rosario, Santa Fe, Argentina

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2006年 / 9卷 / 05期

关键词：

Cr-VI; solution redox chemistry; reaction intermediates; spectrophotometry;

D O I：

10.1016/j.inoche.2006.02.002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Intermediacy of free radicals and Cr-II in the reaction of HCrO4- with a variety of neutral and acid saccharides, hydroxyacids and alyphatic alcohols was demonstrated by the observation of free radical induced polymerization of acrylonitrile and acrylamide, and detection of CrO22+ when working in O-2-saturated solutions and low [HCrO4-]. The results are interpreted in terms of a mechanism combining the Cr-VI --> Cr-IV --> Cr-II and Cr-VI --> Cr-IV --> Cr-III pathways. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：437 / 440

页数：4

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