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Tungsten(VI) oxytetrachloride
Tungsten(VI) oxytetrabromide
Tungsten(VI) oxytetrachloride is the inorganic compound with the formula . This diamagnetic solid is used to prepare other complexes of tungsten. The red-orange solid that is soluble in aromatic and chlorinated solvents. It reacts with alcohols and water.
Structure

The solid consists of weakly associated square pyramidal monomers. The compound is classified as an oxyhalide.
Synthesis and reactions
is prepared from tungsten trioxide or hexachloride: : : It is "difficult to prepare by other means," but thionyl chloride also oxidizes tungsten(IV) oxide to the oxytetrachloride at 200 °C.
is a Lewis acid. It forms 1:1 adducts with Lewis bases such as acetonitrile and THF.
It is a precursor to catalysts used for polymerization of alkynes.
References
References
- "Tungsten tetrachloride oxide".
- (1966). "Die Kristallstruktur von Wolframoxidchlorid WOCl4 und Wolframoxidbromid WOBr4". Z. Anorg. Allg. Chem..
- (2007). "Inorganic Syntheses".
- (1953). "Non-aqueous solvents". John Wiley & Sons.
- (2013). "Substitution of conventional high-temperature syntheses of inorganic compounds by near-room-temperature syntheses in ionic liquids". Verlag der Zeitschrift für Naturforschung.
- (1999). "Living Polymerization of [o-(Trifluoromethyl)phenyl]acetylene by WOCl4-Based Catalysts such as WOCl4-n-Bu4Sn-t-BuOH (1:1:1)". Macromolecules.
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