81607-30-9Relevant articles and documents
BEITRAEGE ZUR CHEMIE DES BROMTRIFLUORIDS 1.TEIL PENTAFLUORPHENYLBROM(III)DIFLUORID UND -BIS(TRIFLUORACETAT)
Frohn, Hermann Josef,Giesen, Matthias
, p. 9 - 16 (1984)
BrF3 reacts with C6F5SiF3 to form C6F5BrF2, a volatile, colourless, and thermally stable solid, which melts at 35 - 36 deg C without decomposition.Its chemical and spetroscopic properties are in contrast to the product described by Sams .The reactivity
Contributions to the chemistry of brominetrifluoride. Part 2. Bis(pentafluorophenyl)bromonium cations with weak nucleophilic fluoroelementate anions
Frohn,Giesen,Welting,Henkel
, p. 841 - 853 (2008/10/08)
BrF3 reacts with MII(C6F5)2 (M = Zn, Cd, Hg) in organic solvents independent of the stoichiometry under formation of C6F5BrF2. Bromonium compounds [(C6F5)2Br]+ [EFn+l]- (E = Sb, As, B) are formed in equimolar reactions if additionally Lewis-acids EFn are present. [(C6F5)2Br]+ [BF4]- results in quantitative yield independent of the stoichiometry of substrates if BrF3 reacts with the Lewis-acidic aryl transfer reagent (C6F5)2BF. The molecular structure of the bromonium compounds [(C6F5)2Br]+ [BF4]- and [(C6F5)2Br]+ [AsF6]- can be interpreted in terms of two asymmetric hypervalent bonds at bromine(III). In solution the electrophilicity of Br(III) in [(C6F5)2Br]+ [EFn+l]- is responsible for the strong dependence of the 19F NMR shift values from the nucleophilicity of the solvent. Gauthier-Villars.