Protactinium nitride

Protactinium nitride is a binary inorganic compound of protactinium and nitrogen with the chemical formula PaN.

Synthesis
The compound can be obtained from the reaction of protactinium metal and nitrogen:
 * 2Pa + N2 -> 2PaN

Also by heating protactinium tetrachloride or pentachloride in ammonia gas.

Physical properties
PaN crystals are of cubic system with Fm3m space group.