New room-temperature ionic liquids with C2-symmetrical imidazolium cationsElectronic supplementary information (ESI) available: 1H NMR and IR spectra and elemental analysis results consistent with the indicated structures for all of the [(Cn)2-Im]Br and [(Cn)2-Im]PF6 compounds. See http://www.rsc.org/suppdata/cc/b1/b104512c/
Abstract
New 1,3-dialkylimidazolium hexafluorophosphates with two butyl, pentyl, octyl, nonyl or decyl groups are room temperature ionic liquids.