01833nas a2200157   4500008004100000022001400041245011700055210006900172260011000241300001400351490000700365520113800372100001701510700001601527856013201543       2016                        eng d  a1463-907600aConcentration-dependent apparent partition coefficients of ionic liquids possessing ethyl-and bi-sulphate anions0 aConcentrationdependent apparent partition coefficients of ionic   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a1105-11130 v183 a<p>This study deals with the concentration dependent apparent partition coefficients log P of the ethyl and bisulfate-based ionic liquids. It is observed that the bisulfate-based ionic liquids show different behaviour with respect to concentration as compared to ethyl sulphate-based ionic liquids. It is significant and useful analysis for the further implementation of alkyl sulfate based ionic liquids as solvents in extraction processes. The log P values of the ethyl sulphate-based ionic liquids were noted to vary linearly with the concentration of the ionic liquid, whereas a flip-flop trend with the concentration for the log P values of the bisulphate-based ionic liquids was observed due to the difference in hydrogen bond accepting basicity and possibility of aggregate formation of these anions. The pi-pi interactions between the imidazolium and pyridinium rings were seen to affect the log P values. The alkyl chain length of anions was also observed to influence the log P values. The hydrophobicity of ionic liquid changes with the alkyl chain in the anion in the order; [HSO4](-) &lt; [EtSO4](-) &lt; [BuSO4](-).</p>1 aJain, Preeti1 aKumar, Anil  uhttps://library.ncl.res.in/content/concentration-dependent-apparent-partition-coefficients-ionic-liquids-possessing-ethyl-and-101569nas a2200145   4500008004100000245009900041210006900140260000800209300001000217490000700227520103500234100001701269700001601286856012101302       2017                        eng d00aComparable ionicity of the solutions of aprotic and protic ionic liquids by anion substitution0 aComparable ionicity of the solutions of aprotic and protic ionic  cJUN  a1-13 0 v463 aTemperature dependent molar conductances and fluidities of bisulfate and ethyl sulfate anion-based ionic liquids were measured. The extent of dissociation of the ionic liquids was estimated from the Walden plot in term of ionicity. The ionicity mainly depends on the magnitude of Coulombic forces, altered by the anion’s Lewis basicity. Aqueous solutions of aprotic ionic liquids, in general, possesses ionicity in the range of ≈70–99%. This article reveals that the substitution of the anion by bisulfate and ethylsulfate reduces the ionicity of aqueous solution of these ionic liquids to the range of 10–37%. This is very close to that exhibited by some of the protic ionic liquids and phosphonium based ionic liquids with sweetner anions. The concentration dependent molar conductance of these ionic liquids has been fitted to Mahiuddin and Ismail’s equation. To our surprise, the molar conductances of bisulfate-based aprotic ionic liquids are remarkably high, even though these ionic liquids possess lower ionicity.1 aJain, Preeti1 aKumar, Anil  uhttps://library.ncl.res.in/content/comparable-ionicity-solutions-aprotic-and-protic-ionic-liquids-anion-substitution