Liquid structure of the ionic liquid 1,3-dimethylimidazolium bis{(trifluoromethyl)sulfonyl}amide

Neutron diffraction was used to determine the liquid structure of 1,3-dimethylimidazolium bis{(trifluoromethyl)sulfonyl}amide {[dmim](NT[f.sub.2])}. The liquid structure of 1,3-dimethylimidazolium bis{(trifluoromethyl)sulfonyl}amide shows a decreasing affinity for hydrogen bonding with the cation as a function of both charge density and anion size.