Intermolecular Vibrations in Aprotic Molecular Liquids and Ionic Liquids

2021 ◽  
pp. 195-229
Author(s):  
Hideaki Shirota
Keyword(s):  
Ionic Liquids ◽  
Molecular Liquids ◽  
Intermolecular Vibrations

Ionic liquids: Solvation ability and polarity

2009 ◽  
Vol 81 (4) ◽  
pp. 767-776 ◽  
Author(s):  
Cinzia Chiappe ◽  
Marco Malvaldi ◽  
Christian Silvio Pomelli
Keyword(s):  
Ionic Liquids ◽  
Kinetic Data ◽  
Classification Criteria ◽  
Experimental Measurements ◽  
Molecular Liquids ◽  
The Poor ◽  
Poor Understanding ◽  
The Many ◽  
Molecular Solvents

The role of ionic liquids (ILs) as solvents in chemistry is limited by the poor understanding of the solvation phenomenon in these media. The usual classification criteria used for molecular solvents through various experimental measurements fail to insert ILs into a univocal classification for ILs. Here, we first discuss the unsuitability of the usual interpretative scheme for molecular liquids and elucidate schematically the mechanism of solvation in ILs, pointing out the peculiarities that differentiate them with respect to molecular liquids. Second, we focus on reactivity and reaction kinetics in ILs, underlining the many problems that the complexity of these media reflects on the interpretation of kinetic data and some possible approaches to understand qualitatively the (often not trivial) kinetic problems for reactions performed in ILs.

Positronium Formation in Room Temperature Ionic Liquids

2008 ◽  
Vol 607 ◽  
pp. 232-234 ◽  
Author(s):  
Tetsuya Hirade
Keyword(s):  
Ionic Liquids ◽  
Formation Process ◽  
Room Temperature ◽  
The Other ◽  
Room Temperature Ionic Liquids ◽  
Molecular Liquids ◽  
Free Electrons ◽  
Good Tool ◽  
Fast Reactions ◽  
Momentum Correlation

Positron annihilation age-momentum correlation measurements (AMOC) were performed for room temperature ionic liquids (IL) to investigate positronium (Ps) formation process. The solvation time of free electrons in IL is longer than in usual molecular liquids. And hence IL is very useful materials to investigate fast reactions such as Ps formation. On the other hand, Ps formation is a good tool to investigate the dry electrons. The para-Ps annihilation lifetime is about 125ps and then the effect of dry electrons should be seen on the S(t) parameters made by the age-momentum correlation measurements. The slow Ps formation was observed in the room temperature ionic liquids.

Heat capacities of ionic liquids and their heats of solution in molecular liquids

2005 ◽  
Vol 433 (1-2) ◽  
pp. 149-152 ◽  
Author(s):  
D. Waliszewski ◽  
I. Stępniak ◽  
H. Piekarski ◽  
A. Lewandowski
Keyword(s):  
Ionic Liquids ◽  
Heat Capacities ◽  
Molecular Liquids ◽  
Heats Of Solution

Counting cations involved in cationic clusters of hydroxy-functionalized ionic liquids by means of infrared and solid-state NMR spectroscopy

2020 ◽  
Vol 22 (13) ◽  
pp. 6861-6867 ◽  
Author(s):  
Anne Strate ◽  
Jan Neumann ◽  
Thomas Niemann ◽  
Peter Stange ◽  
Alexander E. Khudozhitkov ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Infrared Spectra ◽  
Solid State Nmr ◽  
Molecular Liquids ◽  
Solid State Nmr Spectroscopy

Sensitive probe of like-charge attraction: analyzing infrared spectra allows counting the number of cations involved in clusters of opposite (c–a) and like-charged (c–c) ions in ionic liquids. This approach is also applicable to molecular liquids.

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