HIGH-PRESSURE KINETIC EVIDENCE FOR A DISSOCIATIVE INTERCHANGE (ID) SUBSTITUTION MECHANISM FOR AQUATED CHROMIUM(II)

被引：42

作者：

VANELDIK, R

GAEDE, W

COHEN, H

MEYERSTEIN, D

机构：

[1] BEN GURION UNIV NEGEV,R BLOCH COAL RES CTR,IL-84105 BEER SHEVA,ISRAEL

[2] NUCL RES CTR NEGEV,IL-84190 BEER SHEVA,ISRAEL

[3] BEN GURION UNIV NEGEV,DEPT CHEM,IL-84105 BEER SHEVA,ISRAEL

来源：

INORGANIC CHEMISTRY | 1992年 / 31卷 / 18期

关键词：

D O I：

10.1021/ic00044a006

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The intimate nature of ligand substitution reactions of aquated chromium(II) was investigated by studying the effect of pressure on the rate of complex formation of aliphatic free radicals .R with aquated chromium(II) using a high-pressure pulse-radiolysis technique (see reaction below). The reaction exhibits for 10 different R's an average volume of activation of +4.3 +/- 1.0 cm3 mol-1. This is interpreted as an indication that solvent exchange and complex formation of aquated chromium(II) proceed via a dissociative interchange mechanism. Cr(H2O)62+ + .R --> Cr(H2O)5R2+ + H2O

引用

页码：3695 / 3696

页数：2

共 18 条

[1] CHROMIUM-CARBON BONDS IN AQUEOUS-SOLUTIONS - PULSE RADIOLYTIC STUDY [J].