Calixarenes derivatized with sulfur-containing functionalities as selective extractants for heavy and precious metal ions

被引:53
作者
Yordanov, AT [1 ]
Whittlesey, BR [1 ]
Roundhill, DM [1 ]
机构
[1] Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA
关键词
D O I
10.1021/ic9709988
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The calix[4]arenes 5,11,17,23-tert-butyl-25,26,27,28-(2-methylthioethoxy)calix[4]arene, 25,26,27,28-(2-methylthioethoxy)calix[4]arene; and 5,11,17,23-tert-butyl-25,26,27,28-(2-(2-thiophenecarboxy)ethoxy)calix[4]arene have been prepared. The structure of 25,26,27,28-(2-methylthioethoxy)calix [4] arene has been verified by X-ray crystallography, The crystals with the empirical formula C40H48O4S4 are monoclinic C2/c with a = 20.428(2) Angstrom, b = 10.581(1) Angstrom, c = 20.445(2) Angstrom, beta = 118.461(5)degrees, Z = 4. These calix[4]arenes are effective extractants for transferring heavy metal ions from aqueous solution into chloroform. The extraction of Sn(II), Hg(II), Ag(I), pd(II), Au(III), MeHg(II), Pb(II) and Cd(II) into chloroform with these calix[4]arenes is compared with that performed with 5,11,17,23-tert-butyl-25,26,27,28-(2-N,N-dimethyldithiocarbamoylethoxy)calix[4]arene, 25,26,27,28-(2-N,N-dimethyIdithiocarbamoylethoxy)calix[4]arene, and 5,11,17,23-tert-butyl-25,26,27,28-(2-mercaptoethoxy)calix[4]arene.
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页码:3526 / 3531
页数:6
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