Artículos de revistas
Solvatochromic Dipolarity Micro-Sensor Behavior in Binary Solvent Sustems of the (Water + Ionic Liquid) Type. Application of Preferential Solvation Model And Linear Solvation Energy Relationships
Fecha
2014-08Registro en:
Bravo, Maria Virginia; Adam, Claudia Guadalupe; Fortunato, Graciela Guadalupe; Mancini, Pedro Maximo Emilio; Solvatochromic Dipolarity Micro-Sensor Behavior in Binary Solvent Sustems of the (Water + Ionic Liquid) Type. Application of Preferential Solvation Model And Linear Solvation Energy Relationships; Wiley; Journal Of Physical Organic Chemistry; 27; 11; 8-2014; 841-849
0894-3230
CONICET Digital
CONICET
Autor
Adam, Claudia Guadalupe
Bravo, Maria Virginia
Mancini, Pedro Maximo Emilio
Fortunato, Graciela Guadalupe
Resumen
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 ET(30) and Kamlet?Abboud?Taft solvent scales and the application of the solvent exchangemodel confirmed the formation of different intersolvent complexes in binary mixtures of (water + [C4mim] [BF4]/[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 + [C4mim] [BF4]) system, a higher inhibition (13 times) on the kobs 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.