Plutonium selenide is a binaryinorganic compound ofplutonium andselenium with the chemical formula PuSe.^[1][2] The compound forms black crystals and does not dissolve in water.

Reaction of diplutonium triselenide and plutonium trihydride:

${\displaystyle 2{\text{Pu}}_2^{}{\text{Se}}_3^{}+2{\text{PuH}}_3^{}\stackrel{\text{1600 °C}}{\to }4\text{PuSe}+3{\text{H}}_2^{}}$

Fusion of stoichiometric amounts of pure substances:

${\displaystyle \text{Pu}+\text{Se}\stackrel{\text{220–1000 °C}}{\to }\text{PuSe}}$

Plutonium selenide forms black crystals of a cubic system, space group Fm3m, cell parameters a = 0.57934 nm, Z = 4, structure of theNaCl type.^[3][4]

With increasing pressure, two phase transitions occur: at 20 GPa into the trigonal system and at 35 GPa into the cubic system, a structure of theCsCl type.

Itsmagnetic susceptibility follows theCurie-Weiss law.^[5]

• Inorganic compounds
• Plutonium compounds
• Selenides
• Rock salt crystal structure

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