82534-59-6Relevant articles and documents
A cesium-133 nuclear magnetic resonance study of the cesium cation complexation by macrocyclic polyethers in hydrophobic RITLs
Vendilo, Andrey,Popov, Konstantin,Lajunen, Marja,Chistov, Vyacheslav,Djigailo, Dmitry,R?nkk?m?ki, Hannu,Privalov, Viktor,Pletnev, Igor
, p. 341 - 348 (2014)
Thermodynamic data for cesium complexes formation with 18-crown-6 (18C6, L) in five hydrophobic room temperature ionic liquids (RTIL): trioctylmethylammonium salicylate ([TOMA][Sal]), tetrahexylammonium dihexylsulfosuccinate ([THA][DHSS]), 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]), 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([BMIM][N(Tf)2]), 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([HMIM][N(Tf)2]) as well as with 12-crown-4 (12C4, L) and 15-crown-5 (15C5, L) in [BMIM][N(Tf)2] are measured with NMR 133Cs technique at 27-50 °C. Only [Cs(18C6)]+ complexes are found for [TOMA][Sal], [THA][DHSS], [BMIM][PF6], while in [BMIM][N(Tf) 2] and [HMIM][N(Tf)2] both [Cs(18C6)]+ and [Cs(18C6)2]+ species are formed. For 12C4 and 15C5 only [CsL]+ species are registered in [BMIM][N(Tf)2]. For [BMIM][N(Tf)2] the log K1 values are steadily increasing: 12C4 A comparative study of [Cs(18C6)]+ stability in RTILs is estimated to be in the range between water and acetonitrile with constants increasing in the order [THA][DHSS] 6] 2] 2]. It is demonstrated that unlike hydrophilic RTIL the entropy change with an exception of [BMIM][PF6], promotes complex formation while the corresponding enthalpy change is either positive or gives rather small contribution to the complex stability.
Phosphonium and ammonium ionic liquids with aromatic anions: Synthesis, properties, and platinum extraction
Stojanovic, Anja,Kogelnig, Daniel,Fischer, Lisa,Hann, Stephan,Galanski, Markus,Groessl, Michael,Krachler, Regina,Keppler, Bernhard K.
experimental part, p. 511 - 524 (2010/08/03)
Several hydrophobic long-chain quaternary ammonium and phosphonium ionic liquids (ILs) with functionalized aromatic anions were prepared following a metathesis route using tricaprylmethylammonium chloride (Aliquat 336) and trihexyl(tetradecyl)phosphonium