Extraction selectivites of lower rim substituted calix[4] arene hosts induced by variations in the upper rim substituents

被引：0
|
作者：
Yordanov, Alex T. [1 ]
Roundhill, D. Max [1 ]
Mague, Joel T. [2 ]
机构：
[1] Dept. of Chemistry and Biochemistry, Texas Tech. University, Lubbock, TX 79409-1061, United States
[2] Department of Chemistry, Tulane University, New Orleans, LA 70118, United States
来源：
Inorganica Chimica Acta | 1996年 / 250卷 / 1-2 PART I期
关键词：
Iodine - Metal ions - Extraction;
D O I：
10.1016/s0020-1693(96)05238-3
中图分类号：
学科分类号：
摘要：
The compound 25,26,27,28-tetra-(2-dimethyldithiocarbamoylethoxy)calix[4]arene has been prepared from 25,26,27,28-tetra-(2-bromoethoxy)calix[4] arene by reaction with sodium dimethyldithiocarbamate. As an extractant for heavy metal ions 25,26,27,28-tetra-(2-dimethyldithiocarbamoylethoxy)calix[4]arene is effective for Hg2+, Ag+, Pd2+ and Au3+, but much less effective than 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetra-(2-N,N- dimethyldithiocarbamoylethoxy)calix[4]arene for both Hg22+ and MeHg+. Calixarene alcohols also show selectivity as hosts. The alcohol derivative 25,26,27,28-tetra-(2-hydroxyethoxy)calix[4]arene undergoes slow occlusion of iodine into the lower rim, whereas with the alcohol 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetra-(2-hydroxyethoxy)calix[4]arene no interaction is observed.
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页码：295 / 302
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