Plutonium(III) arsenide

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Plutonium(III) arsenide
Names
Other names
Plutonium monoarsenide
Identifiers
3D model (
JSmol
)
  • InChI=1S/As.Pu
    Key: IFUISAQYPYTWOE-UHFFFAOYSA-N
  • [As]#[Pu]
Properties
AsPu
Molar mass 318,92
Appearance Black or dark-gray crystals
Density 10.39 g/cm3
Melting point 2,420 °C (4,390 °F; 2,690 K)
Structure
Cubic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Plutonium arsenide is a binary inorganic compound of plutonium and arsenic with the formula PuAs.

Synthesis

Fusion of stoichiometric amounts of pure substances in a vacuum or helium atmosphere.[1] The reaction is exothermic:

Pu + As → PuAs

Passing arsine through heated plutonium hydride:

2PuH2 + 2AsH3 → 2PuAs + 5H2

Physical properties

Plutonium arsenide forms black or dark gray crystals of a

NaCl-type.[3]

At high pressure (about 35 GPa), a phase transition occurs to a structure of the

CsCl-type.[4]

At a temperature of 129 K, PuAs transforms into a ferromagnetic state.[5]

References

  1. ISBN 978-1-4020-3598-2
    . Retrieved 11 January 2022.
  2. National Bureau of Standards
    . 1959. p. 65. Retrieved 11 January 2022.
  3. doi:10.1107/S0365110X5700047X
    . Retrieved 11 January 2022.
  4. ISSN 0022-5088
    . Retrieved 11 January 2022.
  5. ISSN 0038-1098
    . Retrieved 11 January 2022.
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