Plutonium silicide is a binary inorganic compound of plutonium and silicon with the chemical formula PuSi.

[2][3][4] The compound forms gray crystals.

Reaction of plutonium dioxide and silicon carbide: Reaction of plutonium trifluoride with silicon: Plutonium silicide forms gray crystals of orthorhombic crystal system, space group Pnma, cell parameters: a = 0.7933 nm, b = 0.3847 nm, c = 0.5727 nm, Z = 4, TiSi type structure.

At a temperature of 72 K, plutonium silicide undergoes a ferromagnetic transition.

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