Organoindate Room Temperature Ionic Liquid: Synthesis, Physicochemical Properties and Application

Abstract

O r g a n o i n d a t e R o o m T e m p e r a t u r e I o n i c L i q u i d Brenno A.Abstract: The combination of equimolar amounts of solid 1-n-butyl-3-methylimidazolum chloride (BMI·Cl) with solid indium trichloride affords the new room temperature and air stable ionic liquid BMI·InCl 4 (mp -6°C). The major physicochemical properties (density, viscosity, electrical conductivity and electrochemical window) of BMI·InCl 4 are complementary to those of classical tetrafluoroborate or hexafluorophosphate analogues. However, this liquid possesses similar Lewis acidity properties to those of organoaluminate melts and can be used as recyclable media, as demonstrated here for the tetrahydropyranylation of alcohols.

Gaseous Supramolecules of Imidazolium Ionic Liquids: “Magic” Numbers and Intrinsic Strengths of Hydrogen Bonds

“…Similarly, ESI mass spectrum in the positive ion mode shows X 1 of m/z 139 and the corresponding series of singly Doubly and triply charged gaseous supramolecules: Notably, we learn from the ESI(À) mass spectrum that large enough gaseous (X 1 BF 4 ) n supramolecules are also able to accommodate two (n = 13 and mass = 2938 u or higher) or even three (n = 34 and mass = 7684 u or higher) additional BF 4 À anions; hence doubly and even triply negatively charged gaseous supramolecules are also unequivocally detected (Figure 1 ) n + 3 (BF 4 ) n ] + 3 composition are, apparently, not intrinsically stable [22] in the gas phase and are therefore not observed.…”

“…Positively charged "magic number" supramolecules of [(X 1 ) 5 A 4 ] + 1 composition were also apparent in the ESI(+)-MS spectra of the other ionic liquids except + 1 ionic liquid supramolecules. [22] Relative strengths of hydrogen bonds: The observation that ESI is able to transfer loosely bound ionic liquid supramolecules of [(X 1 ) n (BF 4 ) n + 1 ] À1 composition to the gas phase gave us the unprecedented opportunity to form, isolate via massselection, and then gently dissociate by low-energy CID, mixed gaseous [AaX…”

Arylazo Sulfones as Nonionic Visible-Light Photoacid Generators

“…Purification was carried out by silica gel chromatographic column (eluant: cyclohexane/ethyl acetate mixture) to afford 1250.0 mg of 17 (>99% yield, yellow oil). Spectroscopic data were in accordance with the literature …”

Ionogels: recent advances in design, material properties and emerging biomedical applications

“…[FeCl 4 ] À ). [60][61][62][63] However, these compounds are highly water/moisture sensitivity, they have to be handled in an inert environment. The most significant development of second-generation ILs is the replacement of the anions with relatively stable [BF 4 À ] and [PF 6 À ], as well as halides and carboxylates.…”