Reaktion #416882

Reaktionsgleichung

lithium dimethylamide

Zirconium tetrachloride

lithium dimethylamide

→

zirconium tetrakis(dimethylamide)

Lösungsmittel

diethyl ether

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturthen refluxed 1 hour
2. 2
   SonstigeAll volatiles are removed under vacuum at room temperature
3. 3
   Extraktionthe remaining oily solid is extracted twice with 150 ml portions of hexane
4. 4
   Sonstigethen transferred to a 50 ml flask
5. 5
   workup.DISTILLATIONSolid zirconium tetrakis(dimethylamide) is distilled from the residue under reduced pressure (boiling point=40° C. to 60° C. @ 0.025 mm Hg)
6. 6
   Sonstigeto give a white crystalline, low melting solid

Vorschrift

The lithium dimethylamide, 0.5 mole, in 250 ml of diethyl ether is chilled in an acetone/dry ice bath to -78° C. Zirconium tetrachloride, 26 g (0.112 mole), is transferred to a solid addition funnel attached to the 1000 ml Schlenk then added over 30 minutes to the magnetically stirred lithium dimethylamide slurry. The mixture is warmed slowly to room temperature then refluxed 1 hour. All volatiles are removed under vacuum at room temperature and the remaining oily solid is extracted twice with 150 ml portions of hexane. The combined extracts are reduced in solvent volume then transferred to a 50 ml flask. Solid zirconium tetrakis(dimethylamide) is distilled from the residue under reduced pressure (boiling point=40° C. to 60° C. @ 0.025 mm Hg) to give a white crystalline, low melting solid.

Quelle