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Names | |
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Other names Tungsten(VI) tetrachloride oxide | |
Identifiers | |
3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.033.497 |
EC Number |
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PubChem CID | |
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Properties | |
WOCl4 | |
Molar mass | 341.651 g/mol |
Appearance | red crystals |
Density | 11.92 g/cm3 |
Melting point | 211 °C (412 °F; 484 K) |
Boiling point | 227.55 °C (441.59 °F; 500.70 K) |
reacts | |
Solubility | soluble in benzene and CS2 |
Hazards | |
GHS labelling: [1] | |
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Warning | |
H315, H319, H335 | |
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501 | |
Related compounds | |
Other anions | Tungsten(VI) oxytetrafluoride Tungsten(VI) oxytetrabromide |
Other cations | Molybdenum oxytetrachloride |
Related compounds | Tungsten dichloride dioxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Tungsten(VI) oxytetrachloride is the inorganic compound with the formula W O Cl 4. This diamagnetic solid is used to prepare other complexes of tungsten. The red crystalline compound is soluble in nonpolar solvents but it reacts with alcohols and water and forms adducts with Lewis bases.[ citation needed ][ clarification needed ]
The solid consists of weakly associated square pyramidal monomers. [2] The compound is classified as an oxyhalide.
WOCl4 is prepared from tungsten trioxide or hexachloride: [3]
It is "difficult to prepare by other means," [4] but thionyl chloride also oxidizes tungsten(IV) oxide to the oxytetrachloride at 200 °C. [5]
WOCl4 is a Lewis acid. It is a precursor to catalysts used for polymerization of alkynes. [6]
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