Communication: X-ray scattering from ionic liquids with pyrrolidinium cations

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 structu...

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Veröffentlicht in:The Journal of chemical physics Jg. 134; H. 12; S. 121101
Hauptverfasser: Santos, Cherry S, Murthy, N Sanjeeva, Baker, Gary A, Castner, Jr, Edward W
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States 28.03.2011
Schlagworte:
Cations - chemistry
Ionic Liquids - chemistry
Pyrrolidines - chemistry
Scattering, Radiation
Temperature
X-Ray Diffraction
X-Rays
ISSN:1089-7690, 1089-7690
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Zusammenfassung: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.
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ISSN:1089-7690
1089-7690
DOI:10.1063/1.3569131