LIQUID-LIQUID-EXTRACTION OF COPPER(I) BY CYCLIC TETRATHIO ETHERS

被引：15

作者：

SAITO, K ^{[1
]}

MURAKAMI, S ^{[1
]}

MUROMATSU, A ^{[1
]}

SEKIDO, E ^{[1
]}

机构：

[1] KOBE UNIV,FAC SCI,DEPT CHEM,NADA KU,KOBE 657,JAPAN

来源：

ANALYTICA CHIMICA ACTA | 1990年 / 237卷 / 01期

关键词：

Copper; Extraction; Tetrathio ethers; cyclic;

D O I：

10.1016/S0003-2670(00)83925-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The liquid-liquid extraction of copper(I) with 12-, 13-, 15- and 16-membered cyclic tetrathio ethers ([n]aneS4, where n represents the total number of carbon and sulphur atoms in the cyclic ligand ring) was examined stoichiometrically using picrate ion (Pic-) for the formation of the ion pair. Copper(I) was extracted with four ligands (L) into 1,2-dichloroethane as the ion-pair compound, [Cu(I)L]+Pic-. The extraction constant, Kex, with each ligand was determined. As the ring size of cyclic tetrathio ethers increases, the log Kex values, including that previously reported for [14]aneS4, increase from 7.7 to 9.4. The value of Δ log Kex, which represents the increase in log Kex due to the addition of one carbon atom to the macrocyclic ring, was large between [13]aneS4 and [14]aneS4 (Δ log Kex=1.0) and small between [14]aneS4 and [15]aneS4 (Δ log Kex=0.1). © 1990.

引用

页码：245 / 249

页数：5

共 16 条

[1] STRUCTURAL-CHANGES ACCOMPANYING ELECTRON-TRANSFER IN COPPER(II) COPPER(I) COMPLEXES INVOLVING RELATED OPEN-CHAIN AND CYCLIC TETRATHIA ETHER LIGANDS [J].