Plutonium oxybromide

Plutonium oxybromide is an inorganic compound of plutonium, oxygen, and bromine with the chemical formula PuOBr.^[2][3][4][5]

Plutonium oxybromide

Names
Other names Plutonium oxide bromide
Identifiers
3D model (JSmol)	Interactive image
InChI InChI=1S/BrH.O.Pu/h1H;;/q;-2;+3/p-1 Key: ODEGMVNQVBPJDS-UHFFFAOYSA-M
SMILES [Br-].[O-2].[Pu+3]
Properties
Chemical formula	PuOBr
Molar mass	340 g/mol
Appearance	dark green crystals
Density	9.00 g/cm3[1]
Solubility in water	insoluble
Structure
Crystal structure	tetragonal
Space group	P4/nmm
Related compounds
Other anions	Plutonium oxyfluoride Plutonium oxychloride Plutonium oxyiodide
Other cations	Actinium oxybromide Neodymium oxybromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

The compound was first observed by Davidson et al. in 1949 as a residue from the sublimation of small amounts of PuBr₃ in a silica tube. Pure PuOBr can be obtained by treating plutonim(IV) hydroxide with moist hydrogen bromide at 750 °C.^[6]

It is also produced in the reaction between plutonium dioxide and hydrogen bromide:^[7]

PuO₂ + ½H₂ + HBr → PuOBr + H₂O

Physical properties

Plutonium oxybromide forms dark green crystals of tetragonal system, space group P4/nmm.^[8]

Chemical properties

The compound reacts with dilute acids:^[9]

PuOBr + 2HBr → PuBr₃ + H₂O