Kinetics of Aquation of Co(III) Complex in Binary Aqueous Mixtures and Effect of Multiparameters of the Solvent on the Reaction Rate

被引：2

作者：

El-Subruiti, Gehan M. ^{[1
]}

Fathalla, Magda F. ^{[1
]}

El-Marassi, Yasser R. ^{[1
]}

机构：

[1] Univ Alexandria, Fac Sci, Dept Chem, Alexandria 21321, Egypt

来源：

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 2011年 / 43卷 / 05期

关键词：

SOLVATOCHROMIC PARAMETERS; TRANSITION-STATES; T-BUTANOL; SOLVOLYSIS; WATER; HEXACHLORORHENATE(IV); PERCHLORATE; CONSTANTS; METHYL; UREA;

D O I：

10.1002/kin.20535

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Kinetics and solvent effects of the aquation of trans[Co(4-(Etpy)(4)Cl-2](+) have been studied in ethanol + water ranging from 0 to 60% (v/v) and urea + water of various solvent compositions up to 40% (w/w) of organic solvent. Thermodynamic activation parameters were computed and discussed in terms of the solvation effect. Isokinetic temperature within the experimental range revealed that the existence of the compensation effect arising from the solute-solvent interaction. Nonlinear plots of log k with D-1 suggest that changes in the solvent structure are an important factor that influences these rates. The influence of the added cosolvent on reactivity was analyzed in light of various simple and multiple regression equations using Kirkwood, E-T(30), and Kamlet-Taft parameters. The obtained results showed that the solvation phenomenon plays a dominant role in the aquation. (C) 2011 Wiley Periodicals, Inc. Int J Chem Kinet 43: 230-237, 2011

引用

页码：230 / 237

页数：8

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