| Identification | Back Directory | [Name]
Titanium(III) triiodide | [CAS]
13783-08-9 | [Synonyms]
Titanium triiodide
Titanium(III) iodide
Titanium(III) triiodide | [Molecular Formula]
I3Ti | [MOL File]
13783-08-9.mol | [Molecular Weight]
428.58 |
| Hazard Information | Back Directory | [Chemical Properties]
Titanium (III) iodide is a violet-black needle-shaped crystals; stable up to 300℃ on heating in high vacuum; decomposes to Til2 + Til4 above 350℃. Dissolves slowly in H2O without evolving H2.
| [Synthesis]
Direct synthesis from stoichiometric quantities of the elements by heating in a sealed tube is similar to the preparation of TiCl3 or TiCl2 from Ti + TiCl4. As long as the tetraiodide still accompanies the diiodide and the triiodide, the product is a solid cake which is difficult to break up by tapping. Toward the end of the reaction, after heating for several hours at 700℃, the product can be pulverized by vigorous shaking. The reaction may be completed at 180℃ (reduce the temperature over a period of several days). The reaction is tested for completion by pulling out the tip of the tube from the furnace (maintained at this temperature) and cooling it with a piece of moist filter paper. The reaction is complete if after several hours only a very slight film of Til4 is observed. |
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