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

2021 ◽  
Vol 6 (12) ◽  
pp. 2994-3005
Author(s):  
Venkatramana Losetty ◽  
C. Hazarathaiah Yadav ◽  
Cecilia Devi Wilfred ◽  
Ramesh L. Gardas
Keyword(s):  
Ionic Liquids ◽  
Structural Effects ◽  
Solvent Interactions

Structural effects on dynamic and energetic properties of mixtures of ionic liquids and water

2017 ◽  
Vol 242 ◽  
pp. 204-212 ◽  
Author(s):  
Pablo B. Sánchez ◽  
Josefa García ◽  
Agílio A.H. Pádua
Keyword(s):  
Ionic Liquids ◽  
Structural Effects ◽  
Energetic Properties

Structural Effects of Anions and Cations on the Aggregation Behavior of Ionic Liquids in Aqueous Solutions

2008 ◽  
Vol 112 (51) ◽  
pp. 16682-16689 ◽  
Author(s):  
Huiyong Wang ◽  
Jianji Wang ◽  
Shibiao Zhang ◽  
Xiaopeng Xuan
Keyword(s):  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Aggregation Behavior ◽  
Structural Effects ◽  
Anions And Cations

Solvent Hydrogen Bonding and Structural Effects on Nucleophilic Substitution Reactions: Part 5 – Reaction of 2-Bromo-5-nitropyridine with para-Substituted Anilines in Acetonitrile/Dimethylformamide Mixtures

2008 ◽  
Vol 63 (7-8) ◽  
pp. 493-504 ◽  
Author(s):  
Durvas S. Bhuvaneshwari ◽  
Kuppanagounder P. Elango
Keyword(s):  
Solvent Mixture ◽  
Structural Effects ◽  
Substituted Anilines ◽  
Hydrogen Bond Donor ◽  
Substitution Reactions ◽  
Solvation Model ◽  
Cyclic Voltammetric ◽  
Solvent Interactions ◽  
Multivariate Correlation ◽  
Substituent Constants

Substitution reactions of some para-substituted anilines with 2-bromo-5-nitropyridine are carried out conductometrically in binary acetonitrile/dimethylformamide mixtures. The second-order rate constants correlate well with Hammett’s substituent constants yielding a negative value of ρ. The multiparameter correlation with Kamlet-Taft’s solvatochromic parameters is excellent (100R2 ~ 98%), and the computed percentage contributions of these parameters (Pα = 58%, Pβ = 4%, Pπ∗ = 38%) suggest that both specific and non-specific solute-solvent-solvent interactions influence the reactivity. The solvation model proposed is well supported by the solvatochromism exhibited by the anilines in the solvent mixture under investigation. The molar extinction coefficient (εmax) of aniline varies appreciably up to ~ 25% with a change in the mole fraction of the mixture. The multivariate correlation analysis of εmax (with α, β , π∗) suggests that the solvation around the NH2 moiety of aniline through the solvent’s hydrogen-bond donor (HBD) property is found to be dominant in the solvation process and consequently in altering the rate. The dominance of the solvent’s HBD property in solvation is further confirmed by the cyclic voltammetric oxidation of aniline in the solvent mixture.

scholarly journals Brønsted acidic ionic liquids for cellulose hydrolysis in an aqueous medium: structural effects on acidity and glucose yield

RSC Advances ◽  
2018 ◽  
Vol 8 (26) ◽  
pp. 14623-14632 ◽  
Author(s):  
Shiori Suzuki ◽  
Yuko Takeoka ◽  
Masahiro Rikukawa ◽  
Masahiro Yoshizawa-Fujita
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Theoretical Calculations ◽  
Cellulose Hydrolysis ◽  
Acidity Function ◽  
Structural Effects ◽  
Glucose Yield ◽  
Acidic Ionic Liquids ◽  
Hammett Acidity Function

Using Brønsted acidic ionic liquids with various structures, their acidic catalytic activity for cellulose hydrolysis assisted by microwave irradiation was assessed using the Hammett acidity function (H0) and theoretical calculations.

Polarity of Some [NR1R2R3R4]+[Tf2N]−Ionic Liquids in Ethanol: Preferential Solvation versus Solvent–Solvent Interactions

2012 ◽  
Vol 57 (10) ◽  
pp. 2702-2709 ◽  
Author(s):  
Maria-Luísa C. J. Moita ◽  
Ângela F. S. Santos ◽  
João F. C. C. Silva ◽  
Isabel M. S. Lampreia
Keyword(s):  
Ionic Liquids ◽  
Preferential Solvation ◽  
Solvent Interactions ◽  
Solvent Solvent
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