Emission of XeF *(B,C) excimers was observed when XeF 2 was added to active nitrogen. This indicates XeF * formation in the process of dissociative electronic energy transfer from N * 2 to XeF 2: N * 2+XeF 2→XeF *+N 2+F. The termolecular rate constant for XeF excitation in active nitrogen has been measured to be 10 −34 cm 6 s −1. The formation of XeF * in the reaction Xe *(6s)+XeF 2→XeF *+F+Xe was observed and the yield of XeF * excitation is estimated to be 0.5.