Neodymium oxychloride

Neodymium oxychloride
Names
	Other names Neodymium oxide chloride
Identifiers
3D model (JSmol)	Interactive image;
PubChem CID	172678238;
	InChI InChI=1S/ClH.Nd.O/h1H;;/q;+3;-2/p-1 Key: AANUWLYYJMIHDX-UHFFFAOYSA-M;
	SMILES [Nd+3].[O-2].[Cl-];
Properties
Chemical formula	NdOCl
Molar mass	195.69 g/mol
Appearance	crystals
Structure
Crystal structure	tetragonal
Space group	P4/nmm
Related compounds
Related compounds	Praseodymium oxychloride; Holmium oxychloride; Erbium oxychloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Neodymium oxychloride or neodymium oxide chloride is an inorganic compound of neodymium, oxygen, and chlorine with the chemical formula NdOCl.^[1]

Synthesis

NdOCl can be synthesized by reacting neodymium oxide (Nd
2O
3) and calcium dichloride (CaCl
2).^[2]

Nd
2O
3 + CaCl
2 → 2NdOCl + CaO^[3]

Physical properties

The compound forms crystals of tetragonal system, space group P4/nmm.^[4]^[5]^[6]

It exhibits paramagnetic susceptibility and structural stability.

Chemical properties

NdOCl can be reduced to metallic neodymium through high-temperature electrolysis, specifically within the FFC (Fray-Farthing-Chen) process.^[1]

NdOCl + 1.5Ca → Nd + CaO + 0.5CaCl
2^[7]

Uses

NdOCl has been investigated as a cathode material for the extraction of metallic neodymium.^[1]

References

↑ ^1.0 ^1.1 ^1.2 Song, Jianxun; Li, Shaolong; Che, Yusi; Fan, Yong; Jiao, Handong; Shu, Yongchun; He, Jilin (1 November 2020). "Synthesis and characterization of neodymium oxychloride". Journal of Materials Research and Technology 9 (6): 16378–16386. doi:10.1016/j.jmrt.2020.11.035. ISSN 2238-7854. https://www.sciencedirect.com/science/article/pii/S2238785420320019. Retrieved 5 July 2025.
↑ Song, Jianxun; Guo, Muxing; Mukherjee, Abhishek; Blanpain, Bart; Fransaer, Jan (10 December 2017). "Extraction of neodymium by direct reduction of NdOCl in molten calcium chloride". Electrochimica Acta 257: 465–472. doi:10.1016/j.electacta.2017.10.103. ISSN 0013-4686. https://www.sciencedirect.com/science/article/abs/pii/S0013468617322259. Retrieved 5 July 2025.
↑ Mamantov, Gleb (1987) (in en). Proceedings of the Joint International Symposium on Molten Salts. Electrochemical Society. p. 848. https://books.google.com/books?id=uSpZAAAAYAAJ&dq=neodymium+oxychloride&pg=RA1-PA848. Retrieved 5 July 2025.
↑ Donnay, Joseph Désiré Hubert (1963) (in en). Crystal Data; Determinative Tables. American Crystallographic Association. p. 603. https://books.google.com/books?id=x5ghAQAAMAAJ&dq=neodymium+oxychloride&pg=PA603. Retrieved 5 July 2025.
↑ (in en) Report [of Joint Committee Fellowship [on] Standard X-ray Diffraction Powder Patterns to Joint Committee on Chemical Analysis by Powder Diffraction Methods]. United States National Bureau of Standards. 1951. p. 24. https://books.google.com/books?id=Q2LAbkFTl5YC&dq=neodymium+oxychloride&pg=PA24. Retrieved 5 July 2025.
↑ (in en) National Bureau of Standards Circular. U.S. Department of Commerce, National Bureau of Standards. 1959. p. 37. https://books.google.com/books?id=xhNgOgjyNJIC&dq=neodymium+oxychloride&pg=PA36. Retrieved 5 July 2025.
↑ Krishnamurthy, Nagaiyar (20 December 2004) (in en). Extractive Metallurgy of Rare Earths. CRC Press. p. 262. ISBN 978-0-203-41302-9. https://books.google.com/books?id=F0Bte_XhzoAC&dq=neodymium+oxychloride&pg=PA262. Retrieved 5 July 2025.

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[SONG-1] 1.0 ^1.1 ^1.2 Song, Jianxun; Li, Shaolong; Che, Yusi; Fan, Yong; Jiao, Handong; Shu, Yongchun; He, Jilin (1 November 2020). "Synthesis and characterization of neodymium oxychloride". Journal of Materials Research and Technology 9 (6): 16378–16386. doi:10.1016/j.jmrt.2020.11.035. ISSN 2238-7854. https://www.sciencedirect.com/science/article/pii/S2238785420320019. Retrieved 5 July 2025.

[2] Song, Jianxun; Guo, Muxing; Mukherjee, Abhishek; Blanpain, Bart; Fransaer, Jan (10 December 2017). "Extraction of neodymium by direct reduction of NdOCl in molten calcium chloride". Electrochimica Acta 257: 465–472. doi:10.1016/j.electacta.2017.10.103. ISSN 0013-4686. https://www.sciencedirect.com/science/article/abs/pii/S0013468617322259. Retrieved 5 July 2025.

[3] Mamantov, Gleb (1987) (in en). Proceedings of the Joint International Symposium on Molten Salts. Electrochemical Society. p. 848. https://books.google.com/books?id=uSpZAAAAYAAJ&dq=neodymium+oxychloride&pg=RA1-PA848. Retrieved 5 July 2025.

[4] Donnay, Joseph Désiré Hubert (1963) (in en). Crystal Data; Determinative Tables. American Crystallographic Association. p. 603. https://books.google.com/books?id=x5ghAQAAMAAJ&dq=neodymium+oxychloride&pg=PA603. Retrieved 5 July 2025.

[5] (in en) Report [of Joint Committee Fellowship [on] Standard X-ray Diffraction Powder Patterns to Joint Committee on Chemical Analysis by Powder Diffraction Methods]. United States National Bureau of Standards. 1951. p. 24. https://books.google.com/books?id=Q2LAbkFTl5YC&dq=neodymium+oxychloride&pg=PA24. Retrieved 5 July 2025.

[6] (in en) National Bureau of Standards Circular. U.S. Department of Commerce, National Bureau of Standards. 1959. p. 37. https://books.google.com/books?id=xhNgOgjyNJIC&dq=neodymium+oxychloride&pg=PA36. Retrieved 5 July 2025.

[7] Krishnamurthy, Nagaiyar (20 December 2004) (in en). Extractive Metallurgy of Rare Earths. CRC Press. p. 262. ISBN 978-0-203-41302-9. https://books.google.com/books?id=F0Bte_XhzoAC&dq=neodymium+oxychloride&pg=PA262. Retrieved 5 July 2025.

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Neodymium oxychloride

Topic: Chemistry

Contents

Synthesis

Physical properties

Chemical properties

Uses

References