Actinium oxychloride

Actinium oxychloride
Names
	Other names Actinium oxide chloride; Actinium(III) oxychloride;
Identifiers
CAS Number	49848-29-5 ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/Ac.ClH.O/h;1H;/q+3;;-2/p-1 Key: QDGBHMLRDYAEIV-UHFFFAOYSA-M;
	SMILES [Ac+3].[Cl-].[O-2];
Properties
Chemical formula	AcOCl
Molar mass	278 g/mol
Appearance	white crystals
Density	7.23 g/cm3
Melting point	1,000 °C (1,830 °F; 1,270 K)
Structure
Crystal structure	tetragonal
Related compounds
Related compounds	Praseodymium oxychloride; Neodymium oxychloride; Lanthanum oxychloride; Plutonium oxychloride;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Actinium oxychloride or actinium oxide chloride is an inorganic compound of actinium, oxygen, and chlorine with the chemical formula AcOCl.^[1]^[2]

Synthesis

AcOCl can be synthesized by reacting AcCl₃ with water at 1000 °C.^[3]^[4]

Also, it can be produced by heating AcCl₃ in ammonia vapor at 900 °C.^[5]

Physical properties

The compound forms white crystals of the tetragonal system, structure type of PbClF.^[4]^[3]

References

^ Vajgel', F. (1985). "Actinium (3) chloride oxide AcOCl". Handbook of inorganic synthesis. V. 4 (in Russian). IAEA. pp. 1216–1217. Retrieved 14 July 2025.
^ Gutmann, Viktor (2 December 2012). Halogen Chemistry. Elsevier. p. 315. ISBN 978-0-323-14847-4. Retrieved 14 July 2025.
^ ^a ^b Perry, Dale L. (19 April 2016). Handbook of Inorganic Compounds. CRC Press. p. 2. ISBN 978-1-4398-1462-8. Retrieved 14 July 2025.
^ ^a ^b Morss, L. R.; Edelstein, Norman M.; Fuger, Jean (31 December 2007). The Chemistry of the Actinide and Transactinide Elements (3rd ed., Volumes 1-5). Springer Science & Business Media. p. 36. ISBN 978-1-4020-3598-2. Retrieved 14 July 2025.
^ Brown, David; Canterford, J. H.; Colton, Ray (1968). Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown. Wiley. p. 160. ISBN 978-0-470-10840-6. Retrieved 14 July 2025.

[1] Vajgel', F. (1985). "Actinium (3) chloride oxide AcOCl". Handbook of inorganic synthesis. V. 4 (in Russian). IAEA. pp. 1216–1217. Retrieved 14 July 2025.

[2] Gutmann, Viktor (2 December 2012). Halogen Chemistry. Elsevier. p. 315. ISBN 978-0-323-14847-4. Retrieved 14 July 2025.

[CRC-3] Perry, Dale L. (19 April 2016). Handbook of Inorganic Compounds. CRC Press. p. 2. ISBN 978-1-4398-1462-8. Retrieved 14 July 2025.

[Morss-4] Morss, L. R.; Edelstein, Norman M.; Fuger, Jean (31 December 2007). The Chemistry of the Actinide and Transactinide Elements (3rd ed., Volumes 1-5). Springer Science & Business Media. p. 36. ISBN 978-1-4020-3598-2. Retrieved 14 July 2025.

[5] Brown, David; Canterford, J. H.; Colton, Ray (1968). Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown. Wiley. p. 160. ISBN 978-0-470-10840-6. Retrieved 14 July 2025.

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