DISSOCIATION KINETICS OF 1,5,9-TRIAZACYCLODODECANE-1,5,9-TRIACETATE AND 1,4,8,12-TETRAAZACYCLOPENTADECANE-1,4,8,12-TETRAACETATE COMPLEXES OF CERIUM(III)

被引：11

作者：

CHOI, KY ^{[1
]}

KIM, KS ^{[1
]}

KIM, JC ^{[1
]}

机构：

[1] PUSAN NATL UNIV TECHNOL,DEPT CHEM,PUSAN 608739,SOUTH KOREA

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 1994年 / 67卷 / 01期

关键词：

D O I：

10.1246/bcsj.67.267

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dissociation kinetics of DOTRA= H(3)dotra (1,5,9-triazacyclododecane- 1,5,9-triacetic acid) and PETA=H(4)peta (1,4,8,12-tetraazacyclopentadecane-1,4,8,12-tetraacetic acid) complexes of Ce(III) ion have been studied in an aqueous solution of 0.1 M (NaClO4 at 25.0+/-0.1 degrees C using Cu(II) ions as a scavenger. The dissociation rate constant for the acid-catalyzed pathway decreases in the order, [Ce(peta)](-) > [Ce(dotra)] > [Ce(teta)](-) > [Ce(nota)] > [Ce(dota)](-) according to the present and literature data. The rate constant is significantly affected by internal cavity and chelate ring sizes.

引用

页码：267 / 270

页数：4

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