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Non‐Spherical Ion Dynamics and Rotational Diffusion for Imidazolium Based Ionic Liquids
Author(s) -
Driver Gordon W.,
Ingman Petri
Publication year - 2011
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201000990
Subject(s) - ionic liquid , chemistry , relaxation (psychology) , chemical physics , solvation , rotational diffusion , ion , context (archaeology) , diffusion , computational chemistry , thermodynamics , organic chemistry , physics , molecule , catalysis , psychology , social psychology , paleontology , biology
Just relax! T 1 NMR relaxation data in the extreme narrowing regime are presented for the planar asymmetric 3‐methyl‐1 H ‐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, D x , D y and D ⊥ , which serve to describe the reorientational motions of the [Hmim] + cation.