Titanium-copper, TiCu

Titanium tetrachloride (British Drug Houses) is stirred over copper powder under nitrogen at ca. 80° for 3 hr before vacuum distillation into a storage ampul (Fig. 9a). Immediately before use, a TiCU-hexane solution (ca. 1 mmole of TiCU per milliliter of hexane) is prepared by vacuum distillation of a weighed quantity of titanium tetrachloride from the storage ampul into a 100-ml flask by short-path vacuum distillation. The flask is filled with nitrogen, removed, and quickly stoppered with a serum cap. The required volume of hexane is syringed into the flask. 

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