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Tungsten hexachloride is the chemical compound with the formula WCl6. This dark violet blue species exists as a volatile solid under standard conditions. It is an important starting reagent in the preparation of tungsten compounds. WCl6 is a rare example of a charge neutral hexachloride, another example being ReCl6. MoCl6 cannot be prepared. Better known than WCl6 is the still more volatile WF6.
Additional recommended knowledge
As a d0 ion, W(VI) forms diamagnetic derivatives. The hexachloride is octahedral with equivalent W-Cl distances of 2.24 - 2.26 Å. In the WCl6, the chloride ligands are donors in both sigma- and pi sense. Methylation with trimethylaluminium affords hexamethyl tungsten. Treatment with butyl lithium affords a reagent that is useful for deoxygenation of epoxides.
WCl6 is an aggressively corrosive oxidant and hydrolyzes to release hydrogen chloride.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tungsten_hexachloride". A list of authors is available in Wikipedia.|