Non-Spherical Ion Dynamics and Rotational Diffusion for Imidazolium Based Ionic Liquids

被引：6

作者：

Driver, Gordon W. ^{[1
]}

Ingman, Petri ^{[2
]}

机构：

[1] Abo Akad Univ, Proc Chem Ctr, Dept Chem Engn, SF-20500 Turku, Finland

[2] Univ Turku, Dept Chem, Instrument Ctr, Turku 20014, Finland

来源：

CHEMPHYSCHEM | 2011年 / 12卷 / 04期

关键词：

extreme narrowing; ion dynamics; ionic liquids; NMR T(1) relaxation; rotational diffusion tensor; NMR RELAXATION RATES; MOLECULAR REORIENTATIONAL DYNAMICS; MAGNETIC-RELAXATION; HEXAFLUOROPHOSPHATE; SPECTROSCOPY; SEPARATION;

D O I：

10.1002/cphc.201000990

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：

Just relax! T1 NMR relaxation data in the extreme narrowing regime are presented for the planar asymmetric 3-methyl-1H-imidazolium cation of the [Hmim]Br ionic liquid. An analytical procedure employing the relaxation data is reported, yielding the diagonalised rotational diffusion tensor. The eigenvalues of the diffusion tensor represent the rotational diffusion constants, Dx, Dy and D⊥, which serve to describe the reorientational motions of the [Hmim]+ cation. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：757 / 760

页数：4

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