Actinium(III) oxybromide

Actinium oxybromide
Names
	Other names Actinium oxide bromide; Actinium(III) oxybomide;
Identifiers
CAS Number	49848-33-1 ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/Ac.BrH.O/h;1H;/q+3;;-2/p-1 Key: XKRRFPCSEZCCLJ-UHFFFAOYSA-M;
	SMILES [Ac+3].[Br-].[O-2];
Properties
Chemical formula	AcOBr
Molar mass	323 g/mol
Appearance	white crystals
Density	7.89 g/cm3
Structure
Crystal structure	tetragonal
Space group	P4/nmm
Related compounds
Related compounds	Berkelium(III) oxybromide; Californium(III) oxybromide; Plutonium oxybromide; Erbium oxybromide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Actinium oxybromide is an inorganic compound of actinium, oxygen, and bromine with the chemical formula AcOBr.^[2]

Synthesis

AcOBr can be synthesized by reacting AcBr₃ with a mixture of NH₃ and H₂O at 500 °C.^[3]^[4]

AcBr₃ + 2NH₃ + H₂O → AcOBr + 2NH₄Br

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

^ Perry, Dale L. (19 April 2016). Handbook of Inorganic Compounds. CRC Press. p. 2. ISBN 978-1-4398-1462-8. Retrieved 14 July 2025.
^ Brown, D. (1968). Halides of the Lanthanides and Actinides. Wiley. p. 203. ISBN 978-0-470-10840-6. Retrieved 14 July 2025.
^ Fried, Sherman; Hagemann, French (1948). The Preparation of Actinium Compounds. U.S. Atomic Energy Commission, Technical Information Division. p. 2. Retrieved 14 July 2025.
^ Gutmann, Viktor (2 December 2012). Halogen Chemistry. Elsevier. p. 315. ISBN 978-0-323-14847-4. Retrieved 14 July 2025.
^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 123. Retrieved 14 July 2025.