INFLUENCE OF THE PENDANT GROUP ON THE SUBSTITUTION LABILITY OF N-SUBSTITUTED ETHYLENEDIAMINETRIACETATE COMPLEXES OF RUTHENIUM(III) IN AQUEOUS-SOLUTION

被引：50

作者：

BAJAJ, HC ^{[1
]}

VANELDIK, R ^{[1
]}

机构：

[1] UNIV WITTEN HERDECKE,INST INORGAN CHEM,STOCKUMER STR 10,W-5810 WITTEN,GERMANY

来源：

INORGANIC CHEMISTRY | 1990年 / 29卷 / 15期

关键词：

D O I：

10.1021/ic00340a026

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Following earlier studies on the substitution behavior of ethylenediaminetetraacetate and related complexes of Ru(III), the series has now been extended to include data for the TV-methylethylenediaminetriacetate complex. Substitution reactions of the aqua and hydroxo complexes with thiocyanate and thiourea exhibit remarkably different activation volumes, which suggest that the substitution mechanism may change over from Ia to A for the aqua and hydroxo complexes, respectively. These data enable an overall discussion of the influence of the pendant group on the substitution lability of such ruthenium(III) complexes. It is suggested that when the pendant group contains a carboxylate moiety, the syn lone pair of electrons on the carboxylate oxygen may interact effectively with the coordinated water molecule and so account for the extreme lability observed in the case of the ethylenediaminetetraacetate complex. © 1990, American Chemical Society. All rights reserved.

引用

页码：2855 / 2858

页数：4

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