System map for the ionic liquid stationary phase tri(tripropylphosphoniumhexanamido)triethylamine bis(trifluoromethylsulfonyl)imide for gas chromatography

摘要

Highlights?System map for SLB-IL76 for the temperature range from 80 to 240°C.?Intermolecular interactions responsible for retention are characterized.?Hydrogen-bond acidity is not clearly connected with the amide groups of the cation.?The SLB-IL76 column has complementary separation properties to HP-88 and similar bis(cyanopropyl)siloxane stationary phases.AbstractThe solvation parameter model is used to construct a system map for the retention of volatile organic compounds on the ionic liquid stationary phase tri(tripropypphosphoniumhexanamido)triethylamine bis(trifluoromethylsulfonyl)imide (SLB-IL76) over the temperature range 80–240°C. The SLB-IL76 stationary phase is moderately cohesive and strongly dipolar/polarizable and hydrogen-bond basic but only a weak hydrogen-bond acid. Electron lone pair interactions are weak and make only a minor contribution to the retention mechanism. The separati