A complimentary study of calixarene based bifunctional receptors for alkali or transition metal cations and Cr2O27- anions

被引：62

作者：

Memon, S ^{[1
]}

Yilmaz, M ^{[1
]}

机构：

[1] Selcuk Univ, Dept Chem, TR-42079 Konya, Turkey

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2001年 / 595卷 / 1-3期

关键词：

calixarene; Schiff base; crown ether;

D O I：

10.1016/S0022-2860(01)00509-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The article describes the syntheses and extraction properties of two new calixarene based receptors (3 and 4); the receptor 3 was synthesized from 25,27-diacetonyloxy-26,28-dihydroxy-5,11,17,23-tetra-tert-butylcalix [4] arene 2 by treatment with tetraethylene glycol ditosylate and then the compound 3 was converted to its Schiff base derivative 4 by refluxing 3 with 1,8-diamino-3,6-dioxaoctane. In the synthesis, the lower rim of p-tert-butylcalix[4]arene has been modified in order to acquire soft and hard binding sites for the recognition of metal cations and Cr2O7-2 selected alkali, transition metal cations and Cr2O7-2 anions are reported. It has been observed that receptor 4 is a better extractant 7 for all metal cations, but not selective as compared to the receptor 3. The protonated alkylinium form of 4 is an effective anions from an aqueous into a dichloromethane layer. (C) 2001 Elsevier Science BN. All extractant for transferring the Cr2O7-2 rights reserved.

引用

页码：101 / 109

页数：9

共 53 条

[1] Synthesis of 1,2-bridged calix[4]arene-biscrowns in the 1,2-alternate conformation [J].