Introducing Ionic Liquids

Welton, Tom

doi:10.1002/9783527654789.ch2

Cited by 3 publications

(2 citation statements)

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“…Not only for academic curiosity but also driven by the urge to create more environmentally benign procedures, the quest for alternative reaction media becomes more and more important, since the solvent is usually the major compound of the solution . The solution for making a process more environmentally benign and efficient might not always lie in using a less toxic solvent but in changing the way it works.…”

Section: Introductionmentioning

confidence: 99%

Complex Structural and Dynamical Interplay of Cyano-Based Ionic Liquids

Weber

Kirchner

2016

J. Phys. Chem. B

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We carried out ab initio molecular dynamics simulations for the three cyano-based ionic liquids, 1-ethyl-3-methylimidazolium tetracyanoborate ([C2C1Im][B(CN)4]), 1-ethyl-3-methyl-imidazolium dicyanamide ([C2C1Im][N(CN)2]), and 1-ethyl-3-methylimidazolium thiocyanate ([C2C1Im][SCN]). We found that the [SCN]-based ionic liquid is much more prone to π-π stacking interactions as opposed to the other two ionic liquids, contrary to the fact that all liquids bear the same cation. Hydrogen bonding is strong in the dicyanamide- and the thiocyanate-based ionic liquids and it is almost absent in the tetracyanoborate liquid. The anion prefers to stay on-top of the imidazolium ring with the highest priority for the [N(CN)2](-) anion followed by the [B(CN)4](-) anion. We find that experimental viscosity trends cannot be correlated to the hydrogen bond dynamics which is fastest for [B(CN)4](-) followed by [SCN](-) and [N(CN)2](-). For the dynamics of the cation on-top of itself, we find the order of [B(CN)4](-) followed by [N(CN)2](-) and finally by [SCN](-). Interestingly, this trend correlates well with the viscosity, suggesting a relation between the cation-cation dynamics and the viscosity at least for these cyano-based ionic liquids. These findings, especially the apparent correlation between cation-cation dynamics and the viscosity, might be useful for the suggestion of better ionic liquids in electrolyte applications.

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Section: Introductionmentioning

confidence: 99%

Complex Structural and Dynamical Interplay of Cyano-Based Ionic Liquids

Weber

Kirchner

2016

J. Phys. Chem. B

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“…Nevertheless, although the advantages of using ILs as solvents for various organic reactions are well-accepted, − to designate a solvent as “green”, it must meet some of the 12 principles of green chemistry . Even though ILs fulfill some of them, this is not enough to classify them as green solvents because other parameters such as toxicity and price should be taken into consideration .…”

Section: Introductionmentioning

confidence: 99%

Green Solvents as a Promising Approach to Degradation of Organophosphorate Pesticides

Pavez

Oliva

Millán

2016

ACS Sustainable Chem. Eng.

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Considering the main characteristics of ionic liquids versus bio-based solvents, which is the most appropriate solvent for degradation of some organophosphorate pesticides in order to obtain a more eco-friendly process?The solvent effect was studied by mean of half-lives (t 1/2 , h) through a kinetic study, which was followed by 31 P NMR and UV/vis. The results showed that the use of bio-based solvents as media for degradation of Fenitrothion (1) and Paraoxon (2) not only leads to a more efficient degradation but also assures a more sustainable process.

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Structuring of Ionic Liquids

2017

Fundamentals of Ionic Liquids

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Introducing Ionic Liquids

Cited by 3 publications

References 203 publications

Complex Structural and Dynamical Interplay of Cyano-Based Ionic Liquids

Complex Structural and Dynamical Interplay of Cyano-Based Ionic Liquids

Green Solvents as a Promising Approach to Degradation of Organophosphorate Pesticides

Structuring of Ionic Liquids

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