Crown ether derivatives of calix[5] arenes: Synthesis and complexation properties

被引：18

作者：

ArnaudNeu, F ^{[1
]}

Arnecke, R ^{[1
]}

Bohmer, V ^{[1
]}

Fanni, S ^{[1
]}

Gordon, JLM ^{[1
]}

SchwingWeill, MJ ^{[1
]}

Vogt, W ^{[1
]}

机构：

[1] UNIV MAINZ, INST ORGAN CHEM, D-55099 MAINZ, GERMANY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1996年 / 09期

关键词：

D O I：

10.1039/p29960001855

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Several crown ether derivatives of calix[5]- and tert-butylcalix[5]-arene have been synthesized and converted into their trimethyl ethers as neutral ligands, For selected examples extraction studies have been carried out with alkali metal picrates in the system water-dichloromethane and stability constants have been determined by UV spectroscopy in methanol, All ligands show a more or less pronounced preference for the larger alkali cations, The selectivity for Cs+ over Na+ is highest for the crown-5 derivative of tert-butylcalix[5]arene (5 = 630). Calorimetric titrations show that the complexation is enthalpically and entropically driven.

引用

页码：1855 / 1860

页数：6

共 31 条

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