title: Communication: X-ray scattering from ionic liquids with pyrrolidinium cations.
abstract: We report the structure functions obtained from x-ray scattering experiments on a series of four homologous ionic liquids. The ionic liquids are 1-alkyl-1-methylpyrrolidinium cations paired with the bis(trifluoromethylsulfonyl)amide anion, with alkyl chain lengths of n = 4, 6, 8, and 10. The structure functions display two intense diffraction peaks for values of the scattering vector q in the range from 0.6 to 1.5 Å(-1) for all samples. Both diffraction peaks shift to lower values of q for increasing temperature. First sharp diffraction peaks are observed in the structure functions for q < 0.5 Å(-1) for liquids with n = 6, 8, and 10.
authors: Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.
authors: Cherry S
authors: CS
authors: Santos
authors: N Sanjeeva
authors: NS
authors: Murthy
authors: Gary A
authors: GA
authors: Baker
authors: Edward W
authors: EW
authors: Castner
mesh_terms: D002412:Cations / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry*; D011759:Pyrrolidines / Q000737:chemistry*; D012542:Scattering, Radiation; D013696:Temperature; D014961:X-Ray Diffraction; D014965:X-Rays
chemical_list: D002412:Cations; D052578:Ionic Liquids; D011759:Pyrrolidines