Reactions of Difluoramine with Lewis Acids

Halogenation of (CF3)3B·NH3: N,N-Dihaloamino- and Halo-tris(trifluoromethyl)borates [(CF3)3B−NX2]- and [(CF3)3B−X]-, X = F, Cl, Br

“…N , N -Dichlorosulfamate [Cl 2 N−SO 3 ] - , however, exists only in aqueous solution. Stable N , N -difluorosulfamic acid forms when SO 3 is reacted with HNF 2 …”

“…Stable N,N-difluorosulfamic acid forms when SO 3 is reacted with HNF 2 . 20 The N-halogenation reactions of 1 leading to the N,Ndihaloborates 2 and 3 are indicative of the remarkable stability of the B-N bond; thus the deprotonated ammine complex behaves like a primary amine. N,N-Dihaloamines, RNX 2 (X ) F, Cl, Br), with various groups R (R ) Me, t-Bu, CF 3 , C 2 F 5 , ...) are known.…”

Preparation, Characterization, and Crystal Structures of the SO3NHF− and SO3NF2− Ions

“…Obvious candidates for HNF 2 sources are difluorosulfamate salts. Although the parent free acid HOSO 2 NF 2 had been known since 1961 and has been widely used as a difluoroaminating reagent, [11,12] no reports could be found on the existence of its salts. Herein, we report the results from two independent studies.…”

“…The compound was identified and characterized by its vibrational spectra and by its crystal structure as the salt [PPh 4 ][SO 3 NHF]. The Raman and IR spectra of NaSO 3 NHF are shown in Supporting Information, and the observed frequencies and intensities are listed in Table 2 and were assigned by comparison with those calculated at the MP2 [11] level of theory with the 6-311 + G(d) basis set. The presence of one hydrogen atom and one fluorine atom attached to the same nitrogen atom was further established by proton and fluorine NMR spectroscopy.…”