KINETICS AND MECHANISM OF THE OXIDATION OF THE SULFITE ION BY THE MN(III)-CYDTA COMPLEX ION

被引：12

作者：

CHANDRAWAT, U ^{[1
]}

PRAKASH, A ^{[1
]}

MEHROTRA, RN ^{[1
]}

机构：

[1] JAI NARAIN VAS UNIV,DEPT CHEM,JODHPUR 342005,RAJASTHAN,INDIA

来源：

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE | 1995年 / 73卷 / 09期

关键词：

KINETICS; OUTER-SPHERE MECHANISM; MN(CYDTA)](-); SO32-;

D O I：

10.1139/v95-190

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reinvestigated oxidation of S(IV), HSO3-/SO32- ions, by [Mn(cydta)(OH2)](-) confirmed that S(IV) is oxidized in two parallel paths; the order with respect to [S(IV)] is one in one of the paths and two in the other. The nature of the dependence of the rate on [H+] is also confirmed. However, the rapid scan of the reaction mixture and measurement of the initial absorbance of the reaction mixture at different wavelengths at the beginning of the reaction suggest an outer-sphere mechanism. The rate parameters are of the same order as obtained in known reactions of an outer-sphere mechanism and this mechanism is further supported by the Marcus cross relation.

引用

页码：1531 / 1537

页数：7