학술논문
Brønsted Basicity of Solute Butylamine in an Aprotic Ionic Liquid Investigated by Potentiometric Titration
Document Type
Article
Source
Chemistry Letters; October 2013, Vol. 42 Issue: 10 p1250-1251, 2p
Subject
Language
ISSN
03667022; 13480715
Abstract
The quantitative Brønsted basicity of butylamine (BuNH2) in the typical aprotic ionic liquid (IL) 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide, [C2mIm+][TFSA−], is reported. Potentiometric titration was performed for BuNH2in the aprotic IL to experimentally determine the acid dissociation constant (pKa) for butylammonium (BuNH3+). The pKavalue was estimated to be 16.6(1), and it was found that the value is significantly larger than that in aqueous solution (pKa= 10.6).