Kinetics and mechanism of reduction of thallium(III) with glyoxal in perchloric acid medium

被引：0

作者：

Rao, MSP ^{[1
]}

Rao, TS ^{[1
]}

机构：

[1] Andhra Univ, Sch Chem, Bioinorgan Chem Res Labs, Waltair 530003, Andhra Pradesh, India

来源：

OXIDATION COMMUNICATIONS | 2002年 / 25卷 / 04期

关键词：

kinetics; mechanism; reduction; thallium(III); glyoxal;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The kinetics and mechanism of reduction of thallium(III) with glyoxal has been studied in 0.5 mol dm(-3) perchloric acid medium. The reaction is first order with respect to thallium(III) and glyoxal. An inverse hydrogen ion effect is observed. A plausible mechanistic pathway for the reaction is suggested which leads to the following rate law: rate=k, [Tl3+] [H2C2O2]+ k(2)[TlOH2+] [Gly] where k(1) and k(2) are the formation constants of the complex between thallium(III), TlOH2+ and glyoxal. The computed values of E-a and DeltaS* are 39.04 +/- 1.04 kJ mol(-1) and -11.66 +/- 7.36 JK(-1) mol(-1), respectively.

引用

页码：542 / 549

页数：8