Showing papers on "Ionic liquid published in 1989"
TL;DR: The donor acceptor properties of room-temperature chloroaluminate ionic liquids composed of mixtures of AlCl 3 with either N-(1-butyl)pyridinium chloride or 1-ethyl-3-methylimidazolium chloride were studied in this paper.
Abstract: The donor-acceptor properties of room-temperature chloroaluminate ionic liquids composed of mixtures of AlCl 3 with either N-(1-butyl)pyridinium chloride or 1-ethyl-3-methylimidazolium chloride were studied. Gutmann donor and acceptor numbers were determined by using the Eu(III) reduction potential and the 31 P chemical shift of triethylphosphine oxide, respectively. Acidic melts are extremely poor donor and strong acceptor media. Basic melts are similar in basicity to DMF
49 citations
TL;DR: In this article, the basic aluminum chloride-1-methyl-3-ethylimidazolium chloride ionic liquid was reduced to [NbCl 6 ] 2- and [NBCL 6 ] 3- in successive, one-electron, reversible redox reactions at a glassy-carbon electrode with voltammetric half-wave potentials of 0.17 and -0.93 V, respectively, in the 44.4/55.6 mol % melt at 40˚C, referenced to aluminum in the 66.7/33.
Abstract: Niobium(V) is complexed as [NbCl 6 ] - in the basic aluminum chloride-1-methyl-3-ethylimidazolium chloride ionic liquid, and it can be reduced to [NbCl 6 ] 2- and [NbCl 6 ] 3- in successive, one-electron, reversible redox reactions at a glassy-carbon electrode with voltammetric half-wave potentials of 0.17 and -0.93 V, respectively, in the 44.4/55.6 mol % melt at 40˚C, referenced to aluminum in the 66.7/33.3 mol % melt
46 citations
TL;DR: A negative-ion fast-atom-bombardment mass spectrometric study of the room temperature chloroaluminate ionic liquids AlCl 3 -[MeEtim]Cl ([MEEtim + = 1-methyl-3-ethylimidazolium cation) has produced the first unambiguous experimental evidence for the existence of [Al 3 Cl 10 ] − [MEI]-Cl.
Abstract: A negative-ion fast-atom-bombardment mass spectrometric study of the room temperature chloroaluminate ionic liquids AlCl 3 -[MeEtim]Cl ([MeEtim] + =1-methyl-3-ethylimidazolium cation) has produced the first unambiguous experimental evidence for the existence of [Al 3 Cl 10 ] −
20 citations
TL;DR: In this paper, the half-wave potentials for both the and systems are very close to values that were measured for the corresponding chloride redox systems in the ionic liquid.
Abstract: Iron(III) and titanium(IV) appear to be complexed as and , respectively, in the Lewis basic ionic liquid Both species exhibit one electron reversible reduction at a glassy carbon electrode with voltammetric half‐wave potentials of ca −009 and −030V, respectively, vs Al in the 667/333 mole percent ionic liquid The half‐wave potentials for both the and systems are very close to values that were measured for the corresponding chloride redox systems in the ionic liquid The Stokes‐Einstein products for and are , respectively, and are in good agreement with literature values for the corresponding chloride complexes The introduction of oxide ion into solutions containing by dissolution of appears to produce an oxide bromide complex, possibly, with a voltammetric reduction peak potential of approximately −056V, but titanium (IV) appears to react very slowly with oxide that is already present in the melt
14 citations
11 citations
1 citations
TL;DR: Raman spectra and NH3 vapor pressure measurements indicate that LiClO4·4 NH3 is stable for use as electrolyte in Li batteries below 80 °C as mentioned in this paper. But the activation energy of ion transport remains mainly constant at 0.26 eV.
Abstract: Raman spectra and NH3 vapor pressure measurements indicate that LiClO4·4 NH3 is stable for use as electrolyte in Li batteries below 80 °C. Density, viscosity, and conductivity data are reported for the temp. range 10-80 °C. In this temp. range, the activation energy of ion transport remains mainly constant at 0.26 eV.