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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.4681
|2 doi
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|a pubmed24n0926.xml
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|a DE-627
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|a eng
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|a Matveev, Vladimir V
|e verfasserin
|4 aut
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|a Molecular mobility in several imidazolium-based ionic liquids according to data of 1 H and 13 C NMR relaxation
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 20.11.2019
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Copyright © 2017 John Wiley & Sons, Ltd.
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|a Temperature dependences are compared for 1 H and 13 C NMR 1/T1 curves relaxation rates in three imidazolium-based ionic liquids (ILs), namely, in [bmim]PF6 , [bmim]BF4 , and [emim]CH3 COO. 13 C curves show alike behavior for all three ILs and follow a well-known Bloembergen-Pound-Purcell (BPP) equation. On the contrary, an essential part of 1 H curves differ strongly from corresponding 13 C ones and also have different shapes for different ILs. For the first time, we have detected the specific, two-maximum shape of 1 H relaxation curve for hydrogen atom of C(2)H group of the [emim]CH3 COO. Assuming that this maximum reflects the correlated rotation of several adjoining ion pairs, we have tried to destroy this rotation by addition of glycerol to the [emim]CH3 COO. The second, high-temperature maximum has disappeared in the [emim]CH3 COO-glycerol mixture, and this fact confirms our assumption. Copyright © 2017 John Wiley & Sons, Ltd
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a NMR relaxation
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|a emimOAc
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|a glycerol
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|a ionic liquids
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|a temperature dependence
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|a Markelov, Denis A
|e verfasserin
|4 aut
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|a Ievlev, Alexandr V
|e verfasserin
|4 aut
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| 700 |
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|a Brui, Ekaterina A
|e verfasserin
|4 aut
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|a Tyutyukin, Konstantin V
|e verfasserin
|4 aut
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|a Lähderanta, Erkki
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 56(2018), 2 vom: 01. Feb., Seite 140-143
|w (DE-627)NLM098179667
|x 1097-458X
|7 nnns
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| 773 |
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|g volume:56
|g year:2018
|g number:2
|g day:01
|g month:02
|g pages:140-143
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|u http://dx.doi.org/10.1002/mrc.4681
|3 Volltext
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