Volumetric and Acoustic Properties of a DBU (1,8-Diazobicyclo[5.4.0]undec-7-ene) Based Protic Ionic Liquid in Water at T = (293.15 to 328.15) K

Singh, Dharmendra; Singh, Vickramjeet; Gardas, Ramesh L.

doi:10.1007/s10953-015-0313-5

Cited by 23 publications

(12 citation statements)

References 51 publications

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“…While the above investigations of analogous AIL and PIL mixtures with water appear to suggest stronger interactions between water and PILs, this does not represent a complete picture of IL–water interactions. The interactions between water and ILs have been inferred from the excess molar volume ( V m E ) and partial molar volume of species ( V i ) of these binary systems from extensive density data. − The resultant deviations of molar volume from additivity suggest that both protic and aprotic ILs demonstrate weakening − and strengthening of interactions between ions and water. − The fact that both classes of ILs can demonstrate both strengthening and weakening of interactions with water implies that ionicity alone cannot explain the strength of interaction. (Indeed, as will be shown in this paper, partial molar volume does not infer a single interaction, but rather a combination of numerous interactions.…”

Section: Introductionmentioning

confidence: 99%

Interactions in Water–Ionic Liquid Mixtures: Comparing Protic and Aprotic Systems

et al. 2017

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The sensitivity of ionic liquids (ILs) to water affects their physical and chemical properties, even at relatively low concentrations, yet the structural thermodynamics of protic IL- (PIL-) water systems at low water concentrations still remains unclear. Using the rigorous Kirkwood-Buff theory of solutions, which can quantify the interactions between species in IL-water systems solely from thermodynamic data, we have shown the following: (1) Between analogous protic and aprotic ILs (AILs), the AIL cholinium bis(trifluoromethanesulfonyl)imide ([Ch][NTf]) shows stronger interactions with water at low water concentrations, with the analogous PIL N,N-dimethylethanolammonium bis(trifluoromethanesulfonyl)imide ([DMEtA][NTf]) having stronger water-ion interactions at higher water contents, despite water-ion interactions weakening with increasing water content in both systems. (2) Water has little effect on the average ion-ion interactions in both protic and aprotic ILs, aside from the AIL [Ch][NTf], which shows a strengthening of ion-ion interactions with increasing water content. (3) Self-association of water in both PIL-water systems leading to the presence of large aggregates of water in IL-rich compositions has been inferred. Water-water interactions in [DMEtA][NTf] were found to be similar to those of dialkylimidazolium AILs, whereas these interactions were much larger in the PIL N,N-dimethylethanolammonium propionate ([DMEtA][Pr]), attributed to the change in anion-water interactions.

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Section: Introductionmentioning

confidence: 99%

Interactions in Water–Ionic Liquid Mixtures: Comparing Protic and Aprotic Systems

et al. 2017

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“…highly viscous ILs are not found to be suitable for application as heat-transfer uids. [5][6][7][8][9] As a consequence the studies on binary mixtures containing ILs have attracted many researchers. [10][11][12][13][14] Switchable ionic liquids (SILs) are capable of reversible compositional change by introduction of small external stimulus, thus SILs are the solvents that change to either neutral state or ionic state.…”

Section: Introductionmentioning

confidence: 99%

Elucidation of molecular interactions between a DBU based protic ionic liquid and organic solvents: thermophysical and computational studies

Singh

Islam

et al. 2016

RSC Adv.

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“…The binary systems, [Omim][PF 6 ]+DMF and [Omim][SCN]+DMF showed negative

κ_{Φ}^{α}

values, which magnitude is increasing with increasing of temperature. The observed

κ_{Φ}^{α}

negative magnitude increases with progression of temperature confirms that penetration effect of the DMF molecules is high predominant than compare to DMF intrinsic compressibility [41] . The order of the compressibility magnitude at infinity dilution for the studied ILs as follows:

true [Omim] [NTf_{2}] + DMF > [Omim] [PF_{6}] + DMF > [Omim] [SCN] + DMF

…”

Section: Resultsmentioning

confidence: 64%

“…The observed k a F negative magnitude increases with progression of temperature confirms that penetration effect of the DMF molecules is high predominant than compare to DMF intrinsic compressibility. [41] The order of the compressibility magnitude at infinity dilution for the studied ILs as follows:…”

Section: Study Of Acoustic Propertiesmentioning

confidence: 99%

Investigation of Anion Structural Effects on Solute‐Solvent Interactions of Ionic Liquids with DMF by Volumetric, Acoustic, Viscometric Properties and COSMO‐RS Calculations

et al. 2021

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This study reveals that the effect of anion structures on solvent‐solute interactions by analysis of sophisticated thermophysical properties of ionic liquids (ILs) with molecular solvent. Three imidazolium based ILs (1‐octyl‐3‐methylimidazolium) [Omim][NTf2], [Omim][PF6] and [Omim][SCN] were synthesized, characterized and measured the thermophysical properties such as density (ρ) sound speed (u) and viscosity (η) of all ILs with DMF as solvent for binary mixture at various conditions. Furthermore, various derived thermophysical propertiesVΦα , κs,Φ, κΦα and ηr, were calculated from experimental data. The type of interactions such as IL‐IL or IL‐solvent or solvent‐solvent are occurred among the component molecules were estimated from the empirical parameters and COSMO−Rs computational study. The obtained results show that the size of anion is governing the volumetric, acoustic and viscometric properties of the studied ILs with DMF.

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Volumetric and Acoustic Properties of a DBU (1,8-Diazobicyclo[5.4.0]undec-7-ene) Based Protic Ionic Liquid in Water at T = (293.15 to 328.15) K

Cited by 23 publications

References 51 publications

Interactions in Water–Ionic Liquid Mixtures: Comparing Protic and Aprotic Systems

Interactions in Water–Ionic Liquid Mixtures: Comparing Protic and Aprotic Systems

Elucidation of molecular interactions between a DBU based protic ionic liquid and organic solvents: thermophysical and computational studies

Investigation of Anion Structural Effects on Solute‐Solvent Interactions of Ionic Liquids with DMF by Volumetric, Acoustic, Viscometric Properties and COSMO‐RS Calculations

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