Anion and cation recognition by new mono- and bis-ruthenium(II) bipyridyl crown ether receptor molecules

被引：39

作者：

Beer, PD ^{[1
]}

Dent, SW ^{[1
]}

Fletcher, NC ^{[1
]}

Wear, TJ ^{[1
]}

机构：

[1] KODAK LTD,HARROW HA1 4TY,MIDDX,ENGLAND

来源：

POLYHEDRON | 1996年 / 15卷 / 18期

基金：

英国工程与自然科学研究理事会;

关键词：

COMPLEXES; AZA; FERROCENE;

D O I：

10.1016/0277-5387(96)00010-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Novel aza crown and dibenzocrown ether mono- and bis-ruthenium(II) bipyridyl amide-containing receptors have been synthesized and their preliminary Group 1 metal cation and halide anion complexing properties investigated. H-1 NMR coordination studies have shown the receptors bind potassium cations in their respective crown ether recognition sites. Chloride anion coordination studies reveal that those receptors containing secondary amide CO-NNH groups can complex and electrochemically sense chloride anions through a combination of electrostatic attraction and favourable amide CO-NH---anion hydrogen bonding interactions. Stability constant determinations from NMR titration data and electrochemical observations suggest, with receptor [Ru(2)L(6)(bipy)(4)][PF6](4), aza crown ether complexed potassium cations in combination with an amide-linked positively charged ruthenium(II) bipyridyl moiety can cooperatively enhance the strength of chloride anion complexation. In addition, fluorescence emission spectral studies show that the relative emission intensities of the metal-to-ligand charge transfer emission bands of the secondary amide-containing receptors are increased in the presence of chloride anions. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：2983 / 2996

页数：14

共 21 条

[1] SELECTIVE ELECTROCHEMICAL RECOGNITION OF THE DIHYDROGEN PHOSPHATE ANION IN THE PRESENCE OF HYDROGEN SULFATE AND CHLORIDE-IONS BY NEW NEUTRAL FERROCENE ANION RECEPTORS [J].