Lanthanum nitride
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| Names | |
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| IUPAC name
Azanylidynelanthanum
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| Other names
Lanthanum mononitride, lanthanum(III) nitride
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| Identifiers | |
CAS Number
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.042.936 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
Chemical formula
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LaN |
| Molar mass | 152.912 g·mol−1 |
| Appearance | Black powder |
| Density | 6.73 g/cm3 |
| Melting point | 2,450 °C (4,440 °F; 2,720 K) |
Solubility in water
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Insoluble |
| Hazards | |
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Pictograms
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Signal word
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Warning |
Hazard statements
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H315, H319, H335 |
Precautionary statements
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P264, P271, P280, P302, P304, P305, P312, P313, P332, P338, P340, P351, P352, P362, P501 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Lanthanum nitride is a binary inorganic compound of lanthanum and nitride with the chemical formula LaN.[1][2]
Preparation
Lanthanum nitride can be prepared from the reaction of nitrogen and lanthanum trihydride:
- 2 LaH3 + N2 → 2 LaN + 3 H2
It can also be prepared from the reaction of ammonia and lanthanum trihydride:[3]
- LaH3 + NH3 → LaN + 3 H2
The reaction of nitrogen and lanthanum amalgam can also work:[4]
- La + ½ N2 → LaN (1000 - 1400 °C)
Ammonia is more reactive than N2 gas, so the synthesis works at lower temperatures:
- La + NH3 → LaN + 1.5 H2 (700 °C)
Physical properties
Lanthanum nitride forms black powder that is insoluble in water.[1] Their crystals are of the cubic system with the Fm3m space group.[5]
It is paramagnetic.
Chemical properties
Lanthanum nitride reacts with water and moisture from the air:[6]
- LaN + 3 H2O → La(OH)3 + NH3
It reacts with acids:
- LaN + 4 HCl → LaCl3 + NH4Cl
Uses
LaN is used as a LED material, magnetic material, and in semiconductors, refractory materials, dyes, and catalysts.[7]
References
- ^ a b "Lanthanum Nitride". American Elements. Retrieved 8 February 2024.
- ^ Derz, Friedrich W. (18 May 2020). H-Z. Walter de Gruyter GmbH & Co KG. p. 1179. ISBN 978-3-11-232209-3. Retrieved 8 February 2024.
- ^ Foster, L. S. (1945). The Preparation of Crucibles from Nitrides. U.S. Atomic Energy Commission. Technical Information Service. p. 8. Retrieved 8 February 2024.
- ^ Young, R. A.; Ziegler, W. T. (November 1952). "Crystal Structure of Lanthanum Nitride 1,2". Journal of the American Chemical Society. 74 (21): 5251–5253. doi:10.1021/ja01141a004. ISSN 0002-7863. Retrieved 8 February 2024.
- ^ Young, R. A.; Ziegler, W. T. (November 1952). "Crystal Structure of Lanthanum Nitride 1,2". Journal of the American Chemical Society. 74 (21): 5251–5253. doi:10.1021/ja01141a004. ISSN 0002-7863. Retrieved 8 February 2024.
- ^ "Lanthanum Nitride Powder, LaN, CAS 25764-10-7 - Heeger Materials". Heeger Materials Inc. Retrieved 8 February 2024.
- ^ Deng, Zihao; Kioupakis, Emmanouil (1 June 2021). "Semiconducting character of LaN: Magnitude of the bandgap and origin of the electrical conductivity". AIP Advances. 11 (6). arXiv:2106.04646. Bibcode:2021AIPA...11f5312D. doi:10.1063/5.0055515. S2CID 235376911. Retrieved 8 February 2024.