Platinum(II) iodide is a binary inorganic compound of platinum and iodine with the chemical formula .
Structure Platinum(II) iodide exhibits polymorphism. A cubic α-form (a = 1109 pm) and monoclinic β-form have been characterized.
Synthesis Platinum(II) iodide can be produced by heating platinum(II) chloride with potassium iodide:
The α-form is obtained by thermal decomposition of in a closed ampoule at an I2 pressure of 8 bar at 430 °C.
The β-form can be prepared by hydrothermal synthesis from PtI4, KI, and I2 at 420 °C.
Related compounds Potassium tetraiodoplatinate () is a soluble derivative of PtI2.
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