CAS number : 7720-83-4
Molecular weight :
Molecular formula/chemical symbol :TiI4
Description :
TiI4 is a rare molecular binary metal iodide, consisting of isolated molecules of tetrahedral Ti(IV) centers. The Ti-I distances are 261 pm. Reflecting its molecular character, TiI4 can be distilled without decomposition at one atmosphere; this property is the basis of its use in the Van Arkel process. The difference in melting point between TiCl4 (m.p. -24 °C) and TiI4 (m.p. 150 °C) is comparable to the difference between the melting points of CCl4 (m.p. -23 °C) and CI4 (m.p. 168 °C), reflecting the stronger intermolecular van der Waals bonding in the iodides.
Two polymorphs of TiI4 exist, one of which is highly soluble in organic solvents. In the less soluble cubic form, the Ti-I distances are 261 pm.
Titanium tetraiodide |
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IUPAC name[hide] Titanium(IV) iodide |
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Other names[hide] Titanium tetraiodide |
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Identifiers |
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Jmol-3D images |
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Properties |
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TiI4 |
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555.485 g/mol |
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Appearance |
red-brown crystals |
4.3 g/cm3 |
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150 °C |
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377 °C |
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Solubility in water |
hydrolysis |
Solubility in other solvents |
soluble in CH2Cl2 |
Structure |
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cubic (a = 12.21 ?) |
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tetrahedral |
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0 D |
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Hazards |
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34-37 |
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26-36/37/39-45 |
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Main hazards |
violent hydrolysis |
Related compounds |
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Related compounds |
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Y (verify) (what is: Y/N?) |
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