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Titanocene dicarbonyl



Dicarbonylbis(cyclopentadienyl)titanium
General
Systematic name Titanocene dicarbonyl
Other names Dicarbonyldi-π-cyclopentadienyltitanium
Dicarbonylbis(η5-cyclopentadienyl)titanium(IV)
Molecular formula C12H10O2Ti
Molar mass 234.09 g/mol
Appearance maroon solid pyrophoric
CAS number [12129-51-0]
Properties
Density and phase  ? g/cm³
Solubility in water insoluble
Other solvents THF,benzene
Melting point 90 °C
Boiling point Sublimes40-80 °C @0.001 mm Hg
Structure
Coordination
geometry 		tetrahedral
Crystal structure
Dipole moment  ? D
Hazards
MSDS External MSDS
Main hazards flammable
NFPA 704
R/S statement R: ?
S: ?
RTECS number  ?
Supplementary data page
Structure and
properties 		n, εr, etc.
Thermodynamic
data 		Phase behaviour
Solid
Spectral data IR, NMR
Related compounds
Related compounds Cp2TiCl2
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and 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 is 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. (2001). John Wiley & Sons, Ltd. DOI:10.1002/047084289X.rd073. 
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Titanocene_dicarbonyl". A list of authors is available in Wikipedia.
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