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From Short‐Range to Long‐Range Intermolecular NOEs in Ionic Liquids: Frequency Does Matter
Author(s) -
Gabl Sonja,
Steinhauser Othmar,
Weingärtner Hermann
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201302712
Subject(s) - intermolecular force , range (aeronautics) , relaxation (psychology) , chemical physics , ionic bonding , low frequency , nuclear magnetic resonance , chemistry , materials science , physics , molecule , ion , organic chemistry , astronomy , psychology , social psychology , composite material
Frequency‐dependent NOE : A new model theory was used to analyze the spatial range of the intermolecular nuclear Overhauser effect in ionic liquids. The spatial range undergoes a transition from long‐range nature at low frequency to a short‐range character at high frequencies. The experimentally accessible cross‐relaxation rate involves contributions from both regimes, but the long‐range component dominates.