HAM
3052
pentafluorosulfur (IIb) in 50 ml. of ethyl ether. Evolution of nitrogen continued even after the addition was complete and a total of 5 1. (0.22 mole) was evolved. The solution was distilled to give 10 g. (407,) of (2-azido-2-trifluoromethyl-1-aziridy1)pentafluorosulfur (IVb) as an unstable colorless liquid which on standing slowly loses nitrogen, b.p. 75-76' (150 m m . ) , n26~1.3538; infrared maxima (neat) were observed a t 4.68 (K3) and it was transparent in the 6.0-,u region. The FI9 n.m.r. spectrum showed peaks typical for SFb and CF, groups and proton n.m.r. (neat) in r-values a t 7.37 and 7.16 (broad peaks, C
