Neodymium(III) nitride

Neodymium(III) 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(III) nitride, terbium(III) nitride and dysprosium(III) nitride.^[3] Neodymium(III) nitride is not usually stoichiometric, and it is very hard to create pure stoichiometric neodymium nitride.^[4]

Neodymium(III) nitride

Names
Other names Neodymium mononitride, azanylidyneneodymium
Identifiers
CAS Number	25764-11-8 Y
3D model (JSmol)	Interactive image
ChemSpider	105116 Y
ECHA InfoCard	100.042.937
EC Number	247-246-7
PubChem CID	117628
CompTox Dashboard (EPA)	DTXSID4067141
InChI InChI=1S/N.Nd[1] Key: OVMJQLNJCSIJCH-UHFFFAOYSA-N[1]
SMILES N#[Nd]
Properties
Chemical formula	NdN
Molar mass	158.25 g/mol[1]
Structure[2]
Crystal structure	Rock Salt (cubic)
Space group	Fm3m (No. 225)
Lattice constant	a = 512.4 pm
Formula units (Z)	4
Hazards
GHS labelling:
Pictograms
Related compounds
Other anions	Neodymium(III) arsenide Neodymium(III) phosphide Neodymium(III) antimonide Neodymium(III) bismuthide Neodymium(III) oxide
Other cations	PrN
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Preparation

Neodymium(III) nitride can be prepared via an exothermic metathesis reaction between lithium nitride and anhydrous neodymium(III) chloride. Lithium chloride formed in the reaction can be removed by THF, a chemical in which lithium chloride dissolves.^[5]

NdCl₃ + Li₃N → NdN + 3 LiCl

It can also be prepared directly when neodymium reacts directly with nitrogen:

2 Nd + N₂ → 2 NdN

It can be prepared when decomposing neodymium amide:

Nd(NH₂)₃ → NdN + N₂ + 3H₂

It can also be produced when neodymium is ignited in air (which contains nitrogen),^[6] but this also produces other compounds, such as neodymium oxide.

See also

• Neodymium
• Nitrogen
• Lanthanide