(Cyclopentadienyl)titanium trichloride
Chemical compound
From Wikipedia, the free encyclopedia
(Cyclopentadienyl)titanium trichloride is an organotitanium compound with the formula (C5H5)TiCl3. It is a moisture sensitive orange solid. The compound adopts a piano stool geometry.[1]
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| Names | |
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| Other names
Titanocene trichloride | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.156.156 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| C5H5Cl3Ti | |
| Molar mass | 219.31 g·molâ1 |
| Appearance | orange solid |
| Density | 1.768 g/cm3 |
| Melting point | 210 °C (410 °F; 483 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation and reactions
(C5H5)TiCl3 is prepared by the reaction of titanocene dichloride and titanium tetrachloride:
- (C5H5)2TiCl2 + TiCl4 â 2 (C5H5)TiCl3
The complex is electrophilic, readily forming alkoxide complexes upon treatment with alcohols.[2]
Reduction of (cyclopentadienyl)titanium trichloride with zinc powder gives the polymeric Ti(III) derivative (cyclopentadienyl)titanium dichloride:[3]
- (C5H5)TiCl3 + 0.5 Zn â 1/n [(C5H5)TiCl2]n + ZnCl2
A related reduction can be effected with cobaltocene:[4]
- (C5H5)TiCl3 + (C5H5)2Co â [(C5H5)2Co]+[(C5H5)TiCl3]â
Other evidence for the Lewis acidity of the trichloride is the ready formation of adducts with phosphine ligands:[5]
- (C5H5)TiCl3 + P(CH3)3 â (C5H5)TiCl3(P(CH3)3
See also
- (Cyclopentadienyl)zirconium trichloride
- (Pentamethylcyclopentadienyl)titanium trichloride
- (Indenyl)titanium trichloride[6]