Fluorination with ionic liquid EMIMF(HF)2.3 as mild HF source

Macroporous Silicon Formation on n-Si in Room-Temperature Fluorohydrogenate Ionic Liquid

“…The conductivity is enhanced with an increase in the n value. The electrochemical window is reported to be approximately 3 V. This RTIL has also been investigated as a medium for fluorination 21,22 and as an electrolyte for fuel cells. 23 In the present study, EtMeIm͑FH͒ 2.3 F was selected as an electrolyte because at this specific n value it is vacuum-stable and highly conductive at room temperature.…”

Fluorohydrogenate Ionic Liquids, Liquid Crystals, and Plastic Crystals

“…Several organic reactions in fluorohydrogenate ionic liquids are known, including halofluorination of alkenes and ring-opening fluorination of epoxides [74][75][76]. Some difficulties in the use of previously known fluorinating reagents such as hydrogen fluoride are avoided by using fluorohydrogenate ionic liquids.…”

Synthesis and Characterization of Poly(hydrogen halide) Halogenates (–I)

“…Three differents ynthetic routes have been used to synthesize av ariety of different [X(HX) n ] À anions( Scheme 1). [3][4][5][6][7][8][9] Mootz' group prepared and characterized salts containing [X(HX) n ] À anions (X = F( n = 1-6), Cl (n = 2-5)). Crystal structures of [Cat][F(HF) n ]( [Cat] = [NO] + (n = 3, 4), [8] [NMe 3 H] + (n = 2-6), [6] [NMe 4 ] + (n = 2, 3, 5) [3] )a sw ell as [Cat][Cl(HCl) n ]( Cat = [SMe 2 H] + (n = 3, 4), [7] [C 5 H 5 NH] + (n = 1, 4, 5) [5] )w ere determined by X-ray diffraction (XRD) using am iniature zone-melting technique for crystallization.S tructures containing ap rotonated base as a cation, like [NMe 3 H] + ,s how strong hydrogen bonding betweena nion and cation, whereas less coordinating cations, for example, [NMe 4 ] + ,y ield more isolated anions.…”

“…[16,17] Poly(hydrogen halide)h alogenates (ÀI), especially [F(HF) n ] À , show some useful properties whichl ead to av arietyo fa pplications.K [F(HF) 2 ]i se lectrolyzed in thes ynthesis of elemental fluorine to avoid the low conductivity of anhydrous HF (aHF). [18] In addition [Cat][F(HF) n ]( Cat = for example, [NEt 3 H] + , [19,20] [C 5 H 5 NH] + , [21][22][23] [EMIM] + (1-ethyl-3-methylimidazolium) [9,11] )h ave been used as ar eagent in organic chemistry which are safer and more convenient to handle when compared to highly toxic anhydrous HF with its boilingp oint at 19.5 8C. They can be used to perform hydro-a nd halofluorination reactions as well as epoxide ring openings and deprotection of silyl ethers.…”