Determination of the Lewis acidity of ionic liquids by means of an IR spectroscopic probe.
Pyridine and ethanenitrile can be used as molecular probes to measure the Lewis acidities of ionic liquids by monitoring the shift of IR absorption bands near 1450 cm(-1) for pyridine and in the range 2250-2340 cm(-1) for ethanenitrile.
Yang
Ya-Li
YL
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Kou
Yuan
Y