13777-23-6Relevant articles and documents
C–F Bond Cleavage Reactions with Beryllium, Magnesium, Gallium, Hafnium, and Thorium Halides
Dankert, Fabian,Deubner, H. Lars,Müller, Matthias,Buchner, Magnus R.,Kraus, Florian,von H?nisch, Carsten
, p. 1501 - 1507 (2020/02/20)
The work describes unexpected stoichiometric C–F bond cleavage reactions of beryllium, magnesium, gallium, hafnium and thorium halides with α,α,α-trifluorotoluene. The reaction of BeBr2 / GaBr3 or MgBr2 / GaBr3 mixtures as well as neat GaI3 with α,α,α-trifluorotoluene in the presence of (OSi2Me4)2 (I) yields the carbenium ion containing compounds [Ph-C(O2Si2Me4)][GaX4] (X = Br: 1, X = I/F: 2). Both compounds were successfully characterized and a defluorination type reaction under incorporation of a siloxy unit was observed. Compound 1 was also characterized by single-crystal X-ray diffraction analysis. The conversion of α,α,α-trifluorotoluene with BeI2, HfI4 or ThI4 turned out to be a halodefluorination-type reaction with formation of α,α,α-triiodotoluene (3). An adequate NMR spectroscopic and the X-ray crystallographic characterization of 3 were performed for the first time.
Arene Derivatives of Zirconium(II) and Hafnium(II)
Calderazzo, Fausto,Pallavicini, Piersandro,Pampaloni, Guido
, p. 1813 - 1818 (2007/10/02)
The anhydrous tetrahalides MX4 (M = Zr or Hf, X = Br or I) were prepared by treating M(BH4)4 with dry HX in n-heptane as solvent, followed by sublimation under reduced pressure.The reaction of ZrCl4 with Al-AlCl3-aromatic hydrocarbon systems led to soluti
