324574-95-0Relevant articles and documents
Apparent molar volumes and expansivities of ionic liquids based on N -Alkyl- N -methylmorpholinium cations in acetonitrile
Marcinkowski, Lukasz,Olszewska, Teresa,Kloskowski, Adam,Warminska, Dorota
, p. 718 - 725 (2014)
Densities of some acetonitrile solutions of ionic liquids based on N-alkyl-N-methyl-morpholinium cations, N-ethyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide, N-butyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide, N-methyl-N-octylmorpholinium bis(trifluoromethanesulfonyl)imide and N-decyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide were measured at T = (298.15-318.15) K and at atmospheric pressure. From density data the apparent molar volumes and partial molar volumes of the ILs at infinite dilution as well as the limiting apparent molar expansibilities and the Hepler's constant values have been evaluated. The results have been discussed in terms of the effect that alkyl chain length of the ILs and experimental temperature have on the ionic liquid-acetonitrile interactions occurring in the studied solutions.
Rational selection of the cation of an ionic liquid to control the reaction outcome of a substitution reaction
Hawker, Rebecca R.,Haines, Ronald S.,Harper, Jason B.
, p. 2296 - 2299 (2018/03/06)
A range of ionic liquids was examined as solvents for a substitution reaction. They were chosen through rationally varying the ionic liquid cation in order to enhance the rate constant. Access to charge and electron-withdrawing substituents benefitted rat
Cyclic quaternary ammonium ionic liquids with perfluoroalkyltrifluoroborates: Synthesis, characterization, and properties
Zhou, Zhi-Bin,Matsumoto, Hajime,Tatsumi, Kuniaki
, p. 2196 - 2212 (2008/01/27)
New cyclic quaternary ammonium salts, composed of N-alkyl(alkyl ether)-N-methylpyrrolidinium, -oxazolidinium, -piperidinium, or -morpholinium cations (alkyl = nC4H9, alkyl ether = CH 3,OCH2, CH3,OCH2CH2) and a perfluoroalkyltrifluoroborate anion ([RFBF3] -, RF = CF3, C2F5, nC3,F7, nC4F9), were synthesized and characterized. Most of these salts are liquids at room temperature. The key properties of these salts - phase transitions, thermal stability, density, viscosity, conductivity, and electrochemical windowswere measured and compared to those of their corresponding [BF4] and [(CF3SO 2)2N]- salts. The structural effect on all the above properties was intensively studied in terms of the identity of the cation and anion, variation of the side chain in the cation (i.e., alkyl versus alkyl ether), and change in the length of the pertluoroalkyl group (RF) in the [RFBF3,]- ion. The reduction of Li + ions and reoxidation of Li metal took place in pure N-butyl-N-methyl pyrrolidinium pentafluoroethyltrifluoroborate as the supporting electrolyte. Such comprehensive studies enhance the knowledge necessary to design and optimize ionic liquids for many applications, including electrolytes. Some of these new salts show desirable properties, including low melting points, high thermal stabilities, low viscosities, high conductivities, and wide electrochemical windows, and may thus be potential candidates for use as electrolytes in high-energy storage devices. In addition, many salts are ionic plastic crystals.