Potassium tetraiodoplatinate is the inorganic compound with the formula . It is the potassium salt of tetraiodoplatinate, a square planar complex of platinum(II). The compound crystallizes from water as the dihydrate, whereas the related chloride and bromide and are obtained only as the anhydrous salts.
It reacts with amines and with ammonia to give charge-neutral derivatives .[1] The compound is prepared by the salt metathesis reaction of potassium iodide and potassium tetrachloroplatinate:[2]
Potassium tetraiodoplatinate is a precursor to the anticancer drug cisplatin.