A thiourea-functionalized benzo-15-crown-5 for cooperative binding of sodium ions and anions

被引：46

作者：

Nishizawa, S ^{[1
]}

Shigemori, K ^{[1
]}

Teramae, N ^{[1
]}

机构：

[1] Tohoku Univ, Dept Chem, Grad Sch Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan

来源：

CHEMISTRY LETTERS | 1999年 / 11期

关键词：

D O I：

10.1246/cl.1999.1185

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new bifunctional receptor 1 for cooperative complexation of cations and anions is synthesized on the basis of benzo-15-crown-5, functionalized with a thiourea moiety as anion binding sites. When Na+ is bound to the crown moiety of 1, the association constants of I-, Br- and NO3- in CD3CN are significantly increased, as compared with free 1. Thermodynamic studies indicate that these large increases in complex stabilities can be ascribed primarily to the enthalpic effect.

引用

页码：1185 / 1186

页数：2

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