| Abstract
| - This paper reports the synthesis of some ionic liquids containing cations 1-octylpyridinium [OPYR]+, 1-octyl-2-methylpyridinium [2MOPYR]+, or 1-octyl-4-methylpyridinium [4MOPYR]+ and anions dicyanamide [N(CN)2]-,bis(trifluoromethylsulfonyl)imide [Tf2N]-, bis(pentafluoroethylsulfonyl)imide [BETI]-, trifluoromethyl sulfonate[TfO]-, nonafluorobutyl sulfonate [NfO]-, tetrafluoroborate [BF4]-, trifluorophenylborate [BF3Ph]-, tetraphenylborate [BPh4]-, or hexafluoroarsenate [AsF6]-. Melting points, decomposition temperatures, densities, mutualsolubilities with water, and viscosities have been measured. Unlike similar ionic liquids containing imidazoliumcations, pyridinium ionic liquids studied here are nearly immiscible with water. Viscosities are similar, and watercontents are slightly lower than those for ionic liquids containing imidazolium cations.
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