KINETICS OF AQUATION OF THE TRIS(ACETYLACETONATE) COMPLEXES OF DIVALENT CHROMIUM, COBALT, AND RUTHENIUM - PULSE RADIOLYTIC STUDY

被引：23

作者：

MEISEL, D ^{[1
]}

SCHMIDT, KH ^{[1
]}

MEYERSTEIN, D ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439

来源：

INORGANIC CHEMISTRY | 1979年 / 18卷 / 04期

关键词：

D O I：

10.1021/ic50194a017

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The kinetics of aquation of Co(acac)3- and Cr(acac)3- were studied as a function of pH. The reactions leading to the loss of each of the three ligands in Co(acac)3- were well separated from each other while in the Cr(acac)3- complex the first step was too fast to follow with our experimental technique. The results are in agreement with a mechanism in which the bidentate-bound ligand is in equilibrium with the ligand bound only as a monodentate. These equilibrium constants are estimated. The ligand bound as monodentate is lost by an acid-catalyzed process, with an acid-independent contribution. The aquation reaction of Ru(acac)3- is too slow to be measured by the pulse radiolytic technique. Ru(acac)3H is a relatively strong acid. The results are compared to those obtained for the aquation reaction of Co(en)32+. © 1979, American Chemical Society. All rights reserved.

引用

页码：971 / 975

页数：5

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