코발트(II) 아이오다이드

개요Cobalt iodide appears as black crystals with a slight ‘iodine’-like odour. When heated to decomposition, it may emit toxic fumes of iodine and oxides of nitrogen. Anhydrous cobalt (II) iodide is sometimes used to test for the presence of water in various solvents. Cobalt (II) iodide is used as a catalyst, for example, in carbonylations. It catalyses the reaction of diketene with Grignard reagents, useful for the synthesis of terpenoids.

용도Cobalt(II) iodide is used as a moisture and humidity indicator. It is also used as a catalyst.

Cobalt(II) iodide is prepared by heating cobalt powder in a stream of hydrogen iodide at 400 to 450°C: Co + 2HI → CoI2 + H2 The product obtained is the black crystalline α-form. Cobalt(II) iodide also may be made by heating cobalt powder with iodine vapor.