Lanthanum oxychloride

Lanthanum oxychloride

Names
Other names Lanthanum oxide chloride
Identifiers
3D model (JSmol)	Interactive image
ECHA InfoCard	100.403.288
InChI InChI=1S/ClH.La.O/h1H;;/q;+3;-2/p-1 Key: STLFZIUSZCELIB-UHFFFAOYSA-M
SMILES [Cl-].[Ln+3].[O-2]
Properties
Chemical formula	LaOCl
Molar mass	190.35 g/mol
Appearance	crystals
Structure
Crystal structure	tetragonal
Space group	P4/nmm
Related compounds
Related compounds	Samarium oxychloride Praseodymium oxychloride Holmium oxychloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Lanthanum oxychloride or lanthanum oxide chloride is an inorganic compound of lanthanum, oxygen, and chlorine with the chemical formula LaOCl. ^[1]

Synthesis

LaOCl can be synthesized by dissolving La₂O₃ in hydrochloric acid and vaporizing the water and then heating the precipitates. ^[2]

Also it can be formed by reacting LaCl₃ with water: ^[3]

LaCl₃ + H₂O → LaOCl + 2HCl

Physical properties

LaOCl decomposes to La₂O₃ at about 700 °C in static air. ^{[4] [5]}

The compound forms crystals of tetragonal system, space group P4/nmm. ^{[6] [7]}

References

1. Zhu, Xiurong; Yu, Yi; Yuan, Jvjun; Zhang, Xianke; Yu, Huajun; Zhang, Wen; Du, Ai; Zhou, Bin (11 August 2017). "Synthesis, characterization and mechanism of formation of carbon aerogels incorporated with highly crystalline lanthanum oxychloride particles". RSC Advances . 7 (63): 39635–39640. Bibcode:2017RSCAd...739635Z. doi:10.1039/C7RA05454H. ISSN   2046-2069 . Retrieved 5 July 2025.
2. Wachsman, E. D. (2003). Solid-state Ionic Devices III: Proceedings of the International Symposium. The Electrochemical Society. p. 439. ISBN   978-1-56677-388-1 . Retrieved 5 July 2025.
3. Koch, Charles William (1953). Thermodynamics of the Trichlorides and Oxychlorides of Some of the Lanthanide and Actinide Elements (thesis). Radiation Laboratory, University of California. p. 65. Retrieved 5 July 2025.
4. Zhu, Xiurong; Hope-Weeks, Louisa J.; Ramirez, Donald; Baghi, Roya; Charles, Vanessa R.; He, Yinjie (5 September 2019). "Controllable decomposition of lanthanum oxychloride through different annealing conditions". Journal of Alloys and Compounds . 800: 29–34. doi:10.1016/j.jallcom.2019.06.071. ISSN   0925-8388 . Retrieved 5 July 2025.
5. Tian, Hao; Guo, Jincheng; Pei, Yu; Hou, Shaochun; Wang, Yuanjiang; Xia, Yumei (12 September 2024). "A synthetic method for lanthanum hydroxychloride suitable for industrialization and its thermal decomposition properties". RSC Advances . 14 (40): 29282–29287. doi:10.1039/D4RA03987D. ISSN   2046-2069. PMC   11403709 . PMID   39285880.
6. 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. Retrieved 5 July 2025.
7. Circular of the National Bureau of Standards. U.S. Department of Commerce, National Bureau of Standards. 1956. p. 22. Retrieved 5 July 2025.