Chemistry:Neodymium nitride

Neodymium(III) nitride
Names
	Other names Neodymium trinitride, azanylidyneneodymium
Identifiers
CAS Number	25764-11-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	105116 ;
EC Number	247-246-7;
PubChem CID	117628;
CompTox Dashboard (EPA)	DTXSID4067141;
	InChI InChI=1S/N.Nd Key: OVMJQLNJCSIJCH-UHFFFAOYSA-N;
	SMILES N#[Nd];
Properties
Chemical formula	NdN
Molar mass	158.25 g/mol
Structure
Crystal structure	Rock Salt (cubic)
Space group	Fm3m (No. 225)
Lattice constant	a = 512.4 pm
Formula units (Z)	4
Hazards
GHS 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).
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	Infobox references

Neodymium nitride or 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 nitride is not usually stoichiometric, and it is very hard to create pure stoichiometric neodymium nitride.^[4]

Preparation

Neodymium 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 in.^[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.

References

↑ ^1.0 ^1.1 ^1.2 "Neodymium nitride (NDN)". https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium-nitride-_NdN.
↑ Adachi, Jun; Katayama, Masahito; Kurosaki, Ken et al. (2008). "Thermal properties of polycrystalline NdN bulk samples with various porosities". Journal of Nuclear Materials (Elsevier BV) 376 (1): 83–87. doi:10.1016/j.jnucmat.2007.12.009. ISSN 0022-3115.
↑ Temmerman, W. M. (2009). "Chapter 241: The Dual, Localized or Band‐Like, Character of the 4f‐States". in Gschneider Jr., K. A.. Handbook on the Physics and Chemistry of Rare Earths vol 39. Elsevier. pp. 100–110. ISBN 978-0-444-53221-3.
↑ Nasirpouri, Farzad and Nogaret, Alain (eds.) (2011) Nanomagnetism and Spintronics: Fabrication, Materials, Characterization and Applications. World Scientific. ISBN:9789814273053
↑ Fitzmaurice, J.C.; Hector, A.; Rowley, A.T.; Parkin, I.P. (1994). "Rapid, low energy synthesis of lanthanide nitrides". Polyhedron (Elsevier BV) 13 (2): 235–240. doi:10.1016/s0277-5387(00)86597-3. ISSN 0277-5387.
↑ Cotton, Simon (2006). Lanthanide and Actinide Chemistry. John Wiley & Sons Ltd.