Neodymium(III) nitride
Neodymium nitride is a chemical compound of neodymium and nitrogen with the formula NdN in which neodymium exhibits the +3 oxidation state and nitrogen exhibits the −3 oxidation state. It is ferromagnetic, like gadolinium nitride, terbium nitride and dysprosium nitride. Neodymium nitride is not usually stoichiometric, and it is very hard to create pure stoichiometric neodymium nitride.
Preparation
Neodymium nitride can be prepared via an exothermic metathesis reaction between lithium nitride and anhydrous neodymium chloride. Lithium chloride formed in the reaction can be removed by THF, a chemical in which lithium chloride dissolves.It can also be prepared directly when neodymium reacts directly with nitrogen:
It can be prepared when decomposing neodymium amide:
It can also be produced when neodymium is ignited in air, but this also produces other compounds, such as neodymium oxide.