Plutonium oxybromide

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Plutonium oxybromide
Names
Other names
Plutonium oxide bromide
Identifiers
3D model (JSmol)
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  • InChI=1S/BrH.O.Pu/h1H;;/q;-2;+3/p-1
    Key: ODEGMVNQVBPJDS-UHFFFAOYSA-M
  • [Br-].[O-2].[Pu+3]
Properties
PuOBr
Molar mass 340 g/mol
Appearance dark green crystals
Density 9.00 g/cm3[1]
insoluble
Structure
tetragonal
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).

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

Synthesis

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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

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

Chemical properties

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The compound reacts with dilute acids:[9]

PuOBr + 2HBr → PuBr3 + H2O

References

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  9. ^ Lemire, R. J. et al., Chemical Thermodynamics of Neptunium and Plutonium, Elsevier, Amsterdam, 2001.