Summary: Certain perhalogenated nitriles have been found to react readily with bromine and active cesium fluoride to afford high yields of N-bromoperhalo-l-alkanimines (€ &FC= NBr;€ &= CF,, C2F5, n-C3F,, CF, Cl, CCl,). Photolysis of the perfluorinated N-bromo compounds af-fords the novel perfluoroazines RfFC= NN= CFRp
