Platinum(IV) iodide is a inorganic compound with the formula PtI4.

[1] it is a dark brown diamagnetic solid and is one of several binary iodides of platinum.

[3] It can also be obtained from the decomposition of hydrogen hexaiodoplatinate(IV) at 80 °C: Platinum(IV) iodide forms dark brown crystals of several modifications:[4] Platinum(IV) iodide decomposes in water.

It is also soluble in ethanol, acetone, alkali, HI, KI, liquid NH3.

[6] It decomposes when heated: When dissolved in hydroiodic acid, platinum(IV) iodide forms hydrogen hexaiodoplatinate(IV):