Actinium(III) bromide

Actinium(III) bromide^[1]
Names
	Other names Actinium tribromide
Identifiers
CAS Number	33689-81-5 [EPA];
3D model (JSmol)	Interactive image;
ChemSpider	23620756;
PubChem CID	57348990;
CompTox Dashboard (EPA)	DTXSID40721762;
	InChI InChI=1S/Ac.3BrH/h;3*1H/p-3 Key: KATYVAFQSWUUQL-UHFFFAOYSA-K;
	SMILES [Br-].[Br-].[Br-].[Ac];
Properties
Chemical formula	AcBr3
Molar mass	466.74 g/mol
Appearance	White crystalline solid
Density	5.85 g/cm3
Melting point	827 °C (1,521 °F; 1,100 K)
Boiling point	1,597 °C (2,907 °F; 1,870 K)
Solubility in water	soluble
Structure
Crystal structure	hexagonal, hP8
Related compounds
Other anions	Actinium(III) chloride
Other cations	Lanthanum(III) bromide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Actinium(III) bromide is a radioactive white crystalline solid that is a salt of actinium. It is prepared by reacting actinium(III) oxide with aluminium bromide at 750 °C.^[1]

Reactions

When treated with a mixture of gaseous ammonia and water vapor at 500°C, it turns into actinium oxybromide.^[3]

^ ^a ^b "Actinium tribromide". WebElements. Retrieved 15 April 2021.
^ Zachariasen, W. H. (1948). "Crystal chemical studies of the 5f-series of elements. I. New structure types". Acta Crystallographica. 1 (5): 265–268. Bibcode:1948AcCry...1..265Z. doi:10.1107/S0365110X48000703.
^ the University of Michigan (1954). Seaborg, Glenn (ed.). The Actinide Elements. McGraw-Hill. p. 870. ISBN 9780598942548.

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