Neodymium oxyfluoride

Neodymium oxyfluoride

Names
IUPAC name fluoro hypofluorite;neodymium
Other names Neodymium oxide fluoride
Identifiers
CAS Number	13816-43-8  Y
3D model (JSmol)	Interactive image
InChI InChI=1S/FH.Nd.O/h1H;;/q;+3;-2/p-1 Key: FXNFEPRSIMVHIW-UHFFFAOYSA-M
SMILES [F-].[O-2].[Nd+3]
Properties
Chemical formula	NdOF
Molar mass	179.239 g/mol
Appearance	Violet powder
Solubility in water	Insoluble
Structure
Crystal structure	cubic, rhombohedral, tetragonal
Space group	P4/nmm
Related compounds
Related compounds	Praseodymium oxyfluoride Lanthanum oxyfluoride Samarium oxyfluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Neodymium oxyfluoride or neodymium oxide fluoride is an inorganic compound of neodymium, oxygen, and fluorine with the chemical formula NdOF. ^[1]

Synthesis

NdOF can be synthesized by pressing a mixture of Nd₂O₃ and NdF₃ at 6 MPa: ^[2]

Nd₂O₃ + NdF₃ → 3NdOF

Physical properties

Neodymium oxyfluoride exhibits three distinct crystal structures, all based on the cubic fluorite arrangement. Among these, two correspond to the stoichiometric compound NdOF: cubic and rhombohedral. The third structure, which is tetragonal, emerges under conditions of fluorine excess relative to NdOF and exists over a range of compositions. ^[3]

Uses

Neodymium oxyfluoride has attracted significant interest in the areas of anionic solid electrolytes, luminescent materials, catalysis, and magnetic materials due to its unique structure, which combines the beneficial properties of rare-earth cations with fluoride (F⁻) and oxide (O²⁻) anions. ^[4]

References

1. "Neodymium Oxyfluoride | CAS 13816-43-8 | NdOF | AMERICAN ELEMENTS ®". American Elements . Retrieved 5 July 2025.
2. Takeda, Osamu; Nakano, Kiyotaka; Kobayashi, Fumiyoshi; Lu, Xin; Sato, Yuzuru; Zhu, Hogmin (1 December 2022). "Solubilities of RE2O3 in REF3-LiF". Journal of Sustainable Metallurgy. 8 (4): 1498–1508. doi:10.1007/s40831-022-00617-6. ISSN   2199-3831 . Retrieved 5 July 2025.
3. Fergus, Jeffrey W. (1 November 1996). "Crystal chemistry of neodymium oxyfluoride". Materials Research Bulletin . 31 (11): 1317–1323. doi:10.1016/0025-5408(96)00138-9. ISSN   0025-5408 . Retrieved 5 July 2025.
4. Yang, Yusheng; Wang, Tuoyao; Zhao, Ran; Zhang, Shuyan; Zhao, Zengwu (1 December 2022). "Molten salt synthesis of neodynium oxyfluoride in various fluoride media with different fluoride ion activities". Journal of Rare Earths. 40 (12): 1935–1944. Bibcode:2022JREar..40.1935Y. doi:10.1016/j.jre.2022.01.018. ISSN   1002-0721 . Retrieved 5 July 2025.