1H, 19F-HOESY and PGSE diffusion studies on ionic liquids:: The effect of co-solvent on structure

被引：66

作者：

Nama, D

Kumar, PGA

Pregosin, PS ^{[1
]}

Geldbach, TJ

Dyson, PJ

机构：

[1] HCI Honggerberg, ETHZ, Lab Inorgan Chem, CH-8093 Zurich, Switzerland

[2] Ecole Polytech Fed Lausanne, Inst Sci & Ingn Chim, CH-1015 Lausanne, Switzerland

来源：

INORGANICA CHIMICA ACTA | 2006年 / 359卷 / 06期

关键词：

ionic liquids; NMR; HOESY; PGSE diffusion;

D O I：

10.1016/j.ica.2005.09.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

H-1, F-19-HOESY studies on the ionic liquid based on 1-butyl-3-methylimidazolium tetrafluoroborate, [C(4)C(1)im]BF4, [C(4)C(1)im]-[N(OTf)(2)], and, partially, [C(4)C(1)im]PF6, are reported. The addition of methanol separates the ions; however, in dichloromethane solution the anions and cations show strong HOESY contacts even after dilution and taken together with the PGSE diffusion measurements, the data suggest strong ion pairing in this solvent. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1907 / 1911

页数：5

共 42 条

[31]

2-2

[32]

Price WS, 1998, CONCEPT MAGNETIC RES, V10, P197, DOI 10.1002/(SICI)1099-0534(1998)10:4<197::AID-CMR1>3.0.CO

[33]

2-S

[34] Crystal structure of 1-butyl-3-methylimidazolium chloride. A clue to the elucidation of the ionic liquid structure [J].

Saha, S ;

Hayashi, S ;

Kobayashi, A ;

Hamaguchi, H .

CHEMISTRY LETTERS, 2003, 32 (08) :740-741

[35] Influence of chloride, water, and organic solvents on the physical properties of ionic liquids [J].

Seddon, KR ;

Stark, A ;

Torres, MJ .

PURE AND APPLIED CHEMISTRY, 2000, 72 (12) :2275-2287

[36] Enantioselective chemo- and bio-catalysis in ionic liquids [J].

Song, CE .

CHEMICAL COMMUNICATIONS, 2004, (09) :1033-1043

[37]

Valentini M, 2001, HELV CHIM ACTA, V84, P2833, DOI 10.1002/1522-2675(20011017)84:10<2833::AID-HLCA2833>3.0.CO

[38]

2-O

[39]

Wasserscheid P., 2002, IONIC LIQUIDS SYNTHE

[40] The effect of dissolved water on the viscosities of hydrophobic room-temperature ionic liquids [J].

Widegren, JA ;

Laesecke, A ;

Magee, JW .

CHEMICAL COMMUNICATIONS, 2005, (12) :1610-1612

← 1 2 3 4 5 →