The Local Structure of Ionic Liquids: Cation–Cation NOE Interactions and Internuclear Distances in Neat [BMIM][BF₄] and [BDMIM][BF₄]

Abstract

The polar domains within model ionic liquids are assessed by intermolecular NOE interaction studies. The cation–cation distances in pure ionic liquids 1-butyl-3-methylimidazolium (see picture) and 1-butyl-2,3-dimethylimidazolium tetrafluoroborate are obtained and used to provide models of the local structure of the liquids.