Publication Date:
2014-08-29
Description:
The type of specific intermolecular and interionic interactions that are established when an ionic liquid is dissolved in water was here analysed. The study of the solvatochromic response of dipolarity micro-sensors based on Reichardt E T (30) and Kamlet–Abboud–Taft solvent scales and the application of the solvent exchange model confirmed the formation of different intersolvent complexes in binary mixtures of (water + [C 4 mim] [BF 4 ]/[Br]) type. These complexes provide H-bond or electron pairs to the polar network, respectively. Moreover, for 4-methoxybenzenesulfonyl chloride hydrolysis reaction in the (water + [C 4 mim] [BF 4 ]) system, a higher inhibition (13 times) on the k obs values was observed. Multiple linear regression analysis that allows confirming the solvent effect upon the reactive system is due to the hydrogen-bond donor properties of intersolvent complex formed. Then, the correlation between two different solvent-dependent processes proved to be successful. Copyright © 2014 John Wiley & Sons, Ltd. From the analysis of dipolarity micro-sensors solvatochromic response and the application of solvent exchange model, we determine the tendency of the different components of binary mixtures formed by (W + ILs) to interact with potential solutes. Therefore, the analysis of correlation between the microscopic properties and k obs values for a hydrolysis reaction allows us to understand the chemical behaviour observed.
Print ISSN:
0894-3230
Electronic ISSN:
1099-1395
Topics:
Chemistry and Pharmacology
,
Physics
