The effect of N-methylation of tetra-aza-alkane copper complexes on the axial binding of anions

被引：39

作者：

Golub, G

Lashaz, A

Cohen, H

Paoletti, P

Bencini, A

Valtancoli, B

Meyerstein, D

机构：

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

[2] UNIV FLORENCE,DEPT CHEM,FLORENCE,ITALY

[3] COLL JUDEA & SAMARIA,KEDUMIM ARIEL,ISRAEL

来源：

INORGANICA CHIMICA ACTA | 1997年 / 255卷 / 01期

关键词：

stability constants; copper complexes; aza macrocycle complexes;

D O I：

10.1016/S0020-1693(96)05352-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The stability constants of the Cu(II) complex of Me(6)tren (Me(6)tren=tris-(2-dimethylaminoethyl)amine) were determined. The axial binding constants of F-, Br-, I- and N-3(-) to Cu(tren)(2+) and Cu(Me(6)tren)(2+) (tren=tris-(2-aminoethyl)amine) were measured. The results obtained are compared with those of the axial binding constants of the isomers, i.e. the complexes Cu(trien)(2+) and Cu(Me(6)trien)(2+) (trien=1,4,7,10-tetraazadecane; Me(6)trien=2,5,8,11-tetramethyl-2,5,8,11-tetraazadodecane). The results point out that N-methylation transforms the Cu(II)L complexes into stronger and harder acids. Properties of the copper complexes with TMC (1,4,8,11-tetramethy-1,4,8,11-tetraazacyclotetradecane) and with Me(6)trpn (tris-(3-dimethylaminopropyl)amine) are also reported.

引用

页码：111 / 115

页数：5