n order to obtain an acidity scale in room-temperature ionic liquid solutions, the protonation equilibrium of sodium p-nitrophenolate in [bm 2im] [NTf2] and in [bmpyrr][NTf2], at 298 K, has been studied by means of spectrophotometrie titration. Carboxylic acids differing in both structure and in water solution strength have been used. Data collected indicate that in the analyzed ionic liquid solutions carboxylic acids are less dissociated than in water solution. Furthermore, by virtue of a mutual interaction, the studied equilibrium seems to be affected by both the nature of the ionic liquids and the carboxylic acids.

D'ANNA F, LA MARCA S, & NOTO R (2009). p-Nitrophenolate: a probe for determining acid strength in ionic liquids. JOURNAL OF ORGANIC CHEMISTRY, 74, 1952-1956 [10.1021/jo802473p].

p-Nitrophenolate: a probe for determining acid strength in ionic liquids

D'ANNA, Francesca;LA MARCA, Sandra;NOTO, Renato
2009

Abstract

n order to obtain an acidity scale in room-temperature ionic liquid solutions, the protonation equilibrium of sodium p-nitrophenolate in [bm 2im] [NTf2] and in [bmpyrr][NTf2], at 298 K, has been studied by means of spectrophotometrie titration. Carboxylic acids differing in both structure and in water solution strength have been used. Data collected indicate that in the analyzed ionic liquid solutions carboxylic acids are less dissociated than in water solution. Furthermore, by virtue of a mutual interaction, the studied equilibrium seems to be affected by both the nature of the ionic liquids and the carboxylic acids.
Settore CHIM/06 - Chimica Organica
D'ANNA F, LA MARCA S, & NOTO R (2009). p-Nitrophenolate: a probe for determining acid strength in ionic liquids. JOURNAL OF ORGANIC CHEMISTRY, 74, 1952-1956 [10.1021/jo802473p].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/36842
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