Access to pure and highly volatile hydrochalcogenide ionic liquids
L H Finger1, F Wohde1, E I Grigoryev1
1Fachbereich Chemie and Materials Science Center, Philipps-Universität, Hans-Meerwein-Str. 4, 35043 Marburg, Germany. JSU@staff.uni-marburg.de.
Abstract:
The reaction of methylcarbonate ionic liquids with H2S or H2Se offers a highly selective synthesis of analytically pure, well-defined and soluble hydrosulphide and hydroselenide organic salts of general interest. Among them, imidazolium hydrochalcogenides show an astonishingly high volatility for cation-aprotic ILs, which allows their quantitative sublimation below 100 °C/10(-2) mbar and actually results in ionic single crystal growth from the gas phase. Vaporisation and decomposition characteristics were investigated by isothermal TGA measurements and DFT calculations.
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