Pb(II) coordination and synergistic ion-exchange extraction by combinations of sulfonamide chelates and 2,2′-bipyridine

被引：54

作者：

Kavallieratos, K

Rosenberg, JM

Bryan, JC

机构：

[1] Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA

[2] Univ Wisconsin, Dept Chem, La Crosse, WI 54601 USA

来源：

INORGANIC CHEMISTRY | 2005年 / 44卷 / 08期

关键词：

D O I：

10.1021/ic050047r

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The disulfonamide ligands 1,2-C6H4(NH2SO2C6H5)(2) (1) and 1,2-C6H4(NH2SO2C6H4-p-Bu')(2) (2), which are readily available in good yields from o-phenylenediamine and the corresponding sulfonyl chlorides, efficiently extract Pb(II) from water into 1,2-dichloroethane when used in synergistic combinations with 2,2'-bipyridine via an ion-exchange mechanism. The extraction was shown to proceed via the formation of a ternary Pb-sulfamido-2,2'-bipyridine complex. The X-ray crystal structure of the binary Pb-sulfamido complex 3 shows a coordination polymer with a stereochemically active lone pair on Pb formed by S=O-Pb axial coordination.

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页码：2573 / 2575

页数：3

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