Titanocene dicarbonyl

Titanocene dicarbonyl
IUPAC name

dicarbonylbis (η5- cyclopentadienyl) titanium
Other names

Dicarbonyldi- π-cyclopentadienyltitanium
Dicarbonylbis (η5- cyclopentadienyl) titanium(IV)
Identifiers
CAS number 12129-51-0
Properties
Molecular formula C12H10O2Ti
Molar mass 234.09 g/mol
Appearance maroon solid pyrophoric
Melting point

90 °C
Boiling point

Sublimes40-80 °C @0.001 mm Hg
Solubility in water insoluble
Solubility in other solvents THF, benzene
Structure
Coordination
geometry		 tetrahedral
Hazards
Main hazards flammable
Related compounds
Related compounds Cp2TiCl2
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Dicarbonylbis(cyclopentadienyl)titanium is the chemical compound with the formula (η5-C5H5)2Ti(CO)2, abbreviated Cp2Ti(CO)2. This maroon-coloured, air-sensitive species is soluble in aliphatic and aromatic solvents[1]. It has been used for the deoxygenation of sulfoxides, reductive coupling of aromatic aldehydes and reduction of aldehydes

Structure and synthesis

Cp2Ti(CO)2 is prepared via the reduction of titanocene dichloride with magnesium under an atmosphere of carbon monoxide.[2]

(C5H5)2TiCl2 + Mg + 2 CO → (C5H5)2Ti(CO)2 + MgCl2

Both Cp2Ti(CO)2 and Cp2TiCl2 are tetrahedral as are related zirconium and hafnium compounds.

References

  1. ^ Sikora, D.J.; Moriarty, K.J.; Rausch, M.D. (1990). "Reagents for Transition Metal complex and Organometallic syntheses." Inorganic Sytheses. 28. pp. 250-251.
  2. ^ "Dicarbonylbis(cyclopentadienyl)titanium". Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons, Ltd. 2001. doi:10.1002/047084289X.rd073.