Abo-Amer, Anwar published the artcileFrom hypervalent xenon difluoride and aryliodine(III) difluorides to onium salts: Scope and limitation of acidic fluoroorganic reagents in the synthesis of fluoroorgano xenon(II) and iodine(III) onium salts, Quality Control of 1206-46-8, the publication is Journal of Fluorine Chemistry (2006), 127(10), 1311-1323, database is CAplus.
Fluorinated organodifluoroboranes RfBF2 (Rf = fluorinated alkyl, aryl) are in general suitable reagents to transform XeF2 and RIF2 (R = alkyl, aryl) into the corresponding onium tetrafluoroborate salts [RfXe][BF4] and [R(Rf)I][BF4], resp. (4-C5F4N)BF2 (C5F4N = tetrafluoropyridyl) and trans-CF3CF:CFBF2 which represent boranes of high acidity form no Xe-C onium salts in reactions with XeF2 but give the desired iodonium salts with RIF2 (R = C6F5, o-, m-, p-C6FH4). The reaction of (4-C5F4N)BF2 with XeF2 ends with a XeF2-borane adduct. The solid product is shock sensitive. Furthermore cooled (¡Ü -60 ¡ãC) samples in FEP tubes exploded several times during the alignment in the Raman spectrometer. C6F5Xe(4-C5F4N), the 1st Xe-(4-C5F4N) compound, was obtained when C6F5XeF was reacted with Cd(4-C5F4N)2. (4-C5F4N)IF2 was prepared in 84% yield from XeF2 and (4-C5F4N)I. Reactions of (4-C5F4N)IF2 and C6F5IF2 with (4-C5F4N)BF2 gave [(4-C5F4N)2I][BF4] and [C6F5(4-C5F4N)I][BF4] in 88% and quant. yields, resp. Analogously, aryl(perfluoroalkenyl)iodonium salts [R(R’)I][BF4] (R = C6F5, o-, m-, p-C6FH4, R’ = trans-CF3CF:CF, CF2:CF) were obtained from RIF2 and R’BF2 in 75% to 94% yields. The gas phase fluoride affinities pF– of selected fluoroorganodifluoroboranes RfBF2 and their hydrocarbon analogs were calculated (B3LYP/6-31+G*) and discussed with respect to their potential to introduce Rf-groups into hypervalent EF2 (E = Xe, RI; R = organic group) bonds. Four aspects which influence the transformation of hypervalent EF2 bonds under the action of Lewis acidic reagents RAFn-1 (A = B, P; n = 3, 5) into the corresponding [RE][AFn+1] salts are presented and the important role of the acidity is emphasized. Fluoride affinities may help to plan the introduction of organo groups into EF2 moieties and to expand the types of acidic reagents. Thus C6H5PF4 with a pF– value comparable to that of RfBF2 compounds is able to introduce the Ph group into RIF2 (R = C6F5 (94% yield), p-C6FH4 (93%)).
Journal of Fluorine Chemistry published new progress about 1206-46-8. 1206-46-8 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Trimethyl(perfluorophenyl)silane, and the molecular formula is C9H9F5Si, Quality Control of 1206-46-8.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia