Chemistry:Titanium bis(acetylacetonate)dichloride

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Titanium bis(acetylacetonate)dichloride
TiCl2(acac)2.png
Names
IUPAC name
(OC-6-2′2)-Dichlorido(2,4-dioxopentan-3-ido-κ2O,O′)titanium
Other names
dichlorobis(2,4-pentanedionato)titanium, dichlorobis(2,4-acetylacetonato)titanium, bis(acetylacetonato)dichlorotitanium
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 241-172-9
Properties
C10H14Cl2O4Ti
Molar mass 316.99 g·mol−1
Appearance red-orange solid
Density 1.514 g/cm3
Melting point 191 °C (376 °F; 464 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Tracking categories (test):

Titanium bis(acetylacetonate)dichloride is the coordination complex with the formula Ti(C5H7O2)2Cl2. It is a common acetylacetonate complex of titanium. It is a red-orange solid that hydrolyzes slowly in air.[1]

The complex is prepared by treatment of titanium tetrachloride with excess acetylacetone:[1]

TiCl4 + 2 Hacac → Ti(acac)2Cl2 + 2 HCl

It is an octahedral complex that crystallizes as a racemic mixture of the chiral cis isomers.[2] It is fluxional in solution, as the result of rapid cis–trans equilibrium.[3]

References

  1. 1.0 1.1 Wilkie, C. A.; Lin, G.; Haworth, D. T. (1979). "cis-[Dihalobis(2,4-Pentanedionato)Titanium(IV)] Complexes". Inorg. Synth. 19: 145–148. doi:10.1002/9780470132500.ch33. 
  2. Ferguson, George; Glidewell, Christopher (2001). "Enantiomeric disorder in racemic cis-dichlorobis(pentane-2,4-dionato)titanium(IV)". Acta Crystallographica Section C 57: 264–265. doi:10.1107/S0108270100019181. 
  3. Bradley, D. C.; Holloway, C. E. (1969). "Nuclear magnetic resonance and infrared spectral studies on labile cis-dialkoxy-bis(acetylacetonato)titanium(IV) compounds". J. Chem. Soc. A: 282–285. doi:10.1039/J19690000282.