title: Bridging the gap between ionic liquids and molten salts: group 1 metal salts of the bistriflamide anion in the gas phase.
abstract: Fourier transform ion cyclotron resonance mass spectrometry experiments showed that liquid Group 1 metal salts of the bistriflamide anion undergoing reduced-pressure distillation exhibit a remarkable behavior that is in transition between that of the vapor-liquid equilibrium characteristics of aprotic ionic liquids and that of the Group 1 metal halides: the unperturbed vapors resemble those of aprotic ionic liquids, in the sense that they are essentially composed of discrete ion pairs. However, the formation of large aggregates through a succession of ion-molecule reactions is closer to what might be expected for Group 1 metal halides. Similar experiments were also carried out with bis{(trifluoromethyl)sulfonyl}amine to investigate the effect of H(+), which despite being the smallest Group 1 cation, is generally regarded as a nonmetal species. In this case, instead of the complex ion-molecule reaction pattern found for the vapors of Group 1 metal salts, an equilibrium similar to those observed for aprotic ionic liquids was observed.
authors.affiliation: Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.
authors.forename: João P
authors.initials: JP
authors.lastname: Leal
authors.forename: Manuel E Minas
authors.initials: ME
authors.lastname: da Piedade
authors.forename: José N
authors.initials: JN
authors.lastname: Canongia Lopes
authors.forename: Alina A
authors.initials: AA
authors.lastname: Tomaszowska
authors.forename: José M S S
authors.initials: JM
authors.lastname: Esperança
authors.forename: Luís Paulo N
authors.initials: LP
authors.lastname: Rebelo
authors.forename: Kenneth R
authors.initials: KR
authors.lastname: Seddon
mesh_terms: D000465:Algorithms; D000577:Amides / Q000737:chemistry*; D000838:Anions; D006845:Hydrocarbons, Fluorinated / Q000737:chemistry*; D007477:Ions / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008670:Metals / Q000737:chemistry*; D011312:Pressure; D012492:Salts / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013816:Thermodynamics
chemical_list: D000577:Amides; D000838:Anions; D006845:Hydrocarbons, Fluorinated; D007477:Ions; D008670:Metals; D012492:Salts