Nitrile group as IR probe to detect the structure and hydrogen-bond properties of piperidinium/pyrrolidinium based ionic liquids and acetonitrile mixtures

2020 ◽  
pp. 114548
Author(s):  
Yan-Zhen Zheng ◽  
Yu Zhou ◽  
Hong-Yan He ◽  
Rui Guo ◽  
Da-Fu Chen
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Nitrile Group ◽  
Bond Properties

The structure and hydrogen-bond properties of N-alkyl-N-methyl-pyrrolidinium bis(trifluoromethylsulfonyl)imide and DMSO mixtures

2020 ◽  
Vol 22 (48) ◽  
pp. 28021-28031
Author(s):  
Yan-Zhen Zheng ◽  
Hong Chen ◽  
Yu Zhou ◽  
Deng Geng ◽  
Hong-Yan He ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Bond Properties ◽  
Hydrogen Bond Interaction ◽  
Practical Applications ◽  
Bond Interaction ◽  
Cosolvent Mixtures

Mixing ionic liquids (ILs) with cosolvents can extend the practical applications of ILs and overcome the drawbacks of neat ILs. Studies on the structure and hydrogen-bond interaction properties of IL–cosolvent mixtures is essential for chemical applications.

scholarly journals Measurement of the hydrogen bond acceptance of ionic liquids and green solvents by the 19F solvatomagnetic comparison method

2021 ◽  
Author(s):  
Christian Laurence ◽  
Sergui Mansour ◽  
Daniela Vuluga ◽  
Julien Legros
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Comparison Method ◽  
Green Solvents ◽  
Reliable Measurement

A 19F solvatomagnetic comparison of 4-fluorophenol and 4-fluoroanisole yields a more reliable measurement of the hydrogen-bond acceptance of ionic liquids and green solvents than the solvatochromic comparison method.

Effect of hydrogen bond of hydroxyl-functionalized ammonium ionic liquids on cycloaddition of CO2

2015 ◽  
Vol 56 (11) ◽  
pp. 1416-1419 ◽  
Author(s):  
Weiguo Cheng ◽  
Benneng Xiao ◽  
Jian Sun ◽  
Kun Dong ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Ammonium Ionic Liquids

scholarly journals Hydrogen bond basicity of ionic liquids and molar entropy of hydration of salts as major descriptors in the formation of aqueous biphasic systems

2018 ◽  
Vol 20 (20) ◽  
pp. 14234-14241 ◽  
Author(s):  
Helena Passos ◽  
Teresa B. V. Dinis ◽  
Ana Filipa M. Cláudio ◽  
Mara G. Freire ◽  
João A. P. Coutinho
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Predictive Model ◽  
Aqueous Biphasic Systems ◽  
Molar Entropy ◽  
Liquid Salt ◽  
Hydrogen Bond Basicity ◽  
Aqueous Biphasic ◽  
Biphasic Systems

A predictive model for ionic liquid/salt aqueous biphasic systems’ formation based on the hydrogen bond basicity of ionic liquids and molar entropy of hydration of salts.

scholarly journals Stability of cellulase in ionic liquids: correlations between enzyme activity and COSMO-RS descriptors

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jacob Nedergaard Pedersen ◽  
Bianca Pérez ◽  
Zheng Guo
Keyword(s):  
Hydrogen Bond ◽  
Enzyme Activity ◽  
Ionic Liquids ◽  
Bond Energy ◽  
Crucial Role ◽  
Enzymatic Saccharification ◽  
Cellulase Activity ◽  
Cellulose Dissolution ◽  
Ion Size ◽  
Selection Of

AbstractIonic liquids (ILs) are effective in pretreating cellulose for enhanced enzymatic saccharification, however ILs can inactivate cellulases. To guide the selection of ILs, the activity of cellulase was correlated with COSMO-RS calculations and descriptors of ILs including hydrogen bond (H-bond) basicity/acidity, polarity and ion size. Trends were deduced using an anion-series and a cation-series of ionic liquids in aqueous solutions. The activity in the cation-series was best correlated with the size of varied cations, whereas the activity in the anion-series showed a pronounced correlation to H-bond basicity and polarity of different anions. COSMO-RS was further used to predict the solubility of cellulose in ILs, which was correlated with cellulase activity on IL-pretreated cellulose. The best correlations were found between the enzyme activity in the anion-series ILs and the logarithmic activity coefficients, the H-bond energy, H-bond basicity and polarizability, underlining that the anion plays a crucial role in cellulose dissolution.

Insights into hydrogen bond donor promoted fixation of carbon dioxide with epoxides catalyzed by ionic liquids

2015 ◽  
Vol 17 (8) ◽  
pp. 5959-5965 ◽  
Author(s):  
Mengshuai Liu ◽  
Kunqi Gao ◽  
Lin Liang ◽  
Fangxiao Wang ◽  
Lei Shi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Bond Activation ◽  
Cycloaddition Reaction ◽  
Dft Studies ◽  
Hydrogen Bond Donor ◽  
Fixation Of Carbon Dioxide

Experimental and DFT studies demonstrated that additional EG could cooperate with ILs to facilitate the cycloaddition reactionviahydrogen bond activation.

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