Tungsten(IV) iodide is a binary inorganic compound of tungsten metal and iodine with the chemical formula .
Preparation Reaction of tungsten(VI) chloride with gaseous hydrogen iodide or concentrated hydroiodic acid:
Reaction of tungsten(IV) chloride with hydroiodic acid:
Physical properties Tungsten(IV) iodide forms black crystals of the triclinic crystal system. Insoluble in cold water, diethyl ether, and chloroform. It dissolves in ethanol.
Chemical properties The compound decomposes when heated in vacuum:
It hydrolyzes in hot water:
Reacts with chlorine and bromine:
References