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
收藏
页码：1185 / 1186
页数：2
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