Introduction

Name: Tungsten Tetraiodide
CAS: 14055-84-6
Formula: WI₄
Molecular weight：691.458
Relative Density: 5.218

Property

Physical properties: Black powder.

Chemical properties: Decompose to tungsten diiodide and iodine when heated in the air with no fixed melting and boiling point, susceptible to hydrolysis, easily oxidized; easily being restored by pyridine, acetonitrile and other nitrogen-containing ligand compound to form the corresponding complexes in the air.

Solubility

It decomposed at the melting temperature, insoluble in cold water, but decomposed in the hot water; soluble in ethanol, insoluble in ether, chloroform, turpentine.

Synthesis

Generated by the hydrogen reduction of tungsten hexachloride, or the reaction of triiodide aluminum and tungsten dioxide.