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]
| Names | |
|---|---|
| Other names Neodymium mononitride, azanylidyneneodymium | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.042.937 |
| EC Number |
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PubChem CID | |
CompTox Dashboard (EPA) | |
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| Properties | |
| NdN | |
| Molar mass | 158.25 g/mol[1] |
| Structure[2] | |
| Rock Salt (cubic) | |
| Fm3m (No. 225) | |
a = 512.4 pm | |
Formula units (Z) | 4 |
| Hazards | |
| GHS labelling: | |
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| 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). | |
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.