FeI2, or iron(II) iodide, is a chemical compound composed of iron and iodine. It consists of one iron atom bonded to two iodine atoms, giving it the formula FeI2. This compound typically appears as a dark brown or black solid and is used in various applications, including organic synthesis and as a reagent in chemical reactions. Iron(II) iodide can be produced by reacting iron with iodine in a controlled environment. It is important in the field of chemistry for its role in forming other compounds and for its potential use in materials science. Its properties make it a subject of interest in studies involving transition metals and halides.