Some physicochemical characteristics of molten salts derived from trimethylsulfonium bromide

Abstract

Ambient temperature melts were derived from trimethylsulfonium bromide (TMSuBr) and AlBr,, AlCI,, or HBr. The aluminum halide melts have Low-wavelength UV cutoffs and single-band 'H NMR spectra. In the TMSuBr-HBr system, the formation of HBr2-and likely existence of H,Br,-are indicated by 'H NMR and IR spectra. Conductivity and viscosity data indicate stronger TMSuf-anion interactions than those between substituted imidazolium and halide anions. A Grotthus mechanism may operate for conduction in TMSuBr:HBr melts.

Ionic liquids derived from trialkylsulfonium bromides: Physicochemical properties and potential applications

“…Aluminum chloride (Fluka AG, puriss) was purified by double vacuum sublimation, and trimethylsulfonium bromide was recrystallized twice with anhydrous ethanol (9) and vacuum dried at~40°C for 2 days. HCl gas (Mattheson) was electronic grade and ethene-free.…”

Magnetic resonance spectroscopy in ionic liquids

“…The reaction enthalpy was found to be 1 kJ mol À1 higher for the HCl À 2 /HCl equilibrium as compared to DCl À 2 /DCl. Ma and Johnson introduced ternary sulfonium cations for ionic liquids [53]. They proposed low-wavelength UV cutoffs and simple NMR spectra as possible benefits.…”

Tetrahydrothiophene‐Based Ionic Liquids: Synthesis and Thermodynamic Characterizations

“…Even if ILs are of interest for several decades by now, studies on sulfonium cations are not very advanced [8,9,10] . The first reported sulfonium‐based ILs were trialkylsulfonium aluminum halides, [11] which are air and moisture sensitive. Matsumoto et al .…”

“…[3,4,5,6,7] Even if ILs are of interest for several decades by now, studies on sulfonium cations are not very advanced. [8,9,10] The first reported sulfonium-based ILs were trialkylsulfonium aluminum halides, [11] which are air and moisture sensitive. Matsumoto et al described low viscosity, high conductivity and high electrochemical stability for symmetric trialkylsulfonium cations and various anions (for example bis(trifluoromethylsulfonyl) imide, [NTf 2 ] À ).…”