Cobalt Azoimide, Co(N₃)₂

Cobalt Azoimide, Co(N₃)₂, and a Basic Azoimide, N₃.Co.OH, have been obtained in mixture by Curtius as a violet powder. Potassium cobalto-azoimide, KN₃.Co(N₃)₂, is obtained as a bright blue crystalline precipitate when concentrated solutions of the two azoimides are mixed. It explodes at 225° C. The ammonium analogue, NH₄N₃.Co(N₃)₂, has also been prepared.