Some reactions of N-chlorodifluoromethanimine, CFz= NC1, have been studied and are compared to related reactions of perfluoromethanimine, CF2= NF. Fluoride promoted reactions of CF2= NC1 result in evidence for the CF3NC1-anion, which is thermally less stable and less reactive than CF3NF-. Oxidation of CF3NCl-, formed in situ by reaction of CFz= NC1 with KF or CsF, with Clz forms CF3NC12 With Brz, CF3NBrCl is formed along ...