Tungsten(V) chloride
Chemical compound
From Wikipedia, the free encyclopedia
Tungsten(V) chloride is an inorganic compound with the formula W2Cl10. This compound is analogous in many ways to the more familiar molybdenum pentachloride.
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| Names | |
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| Other names
tungsten pentachloride | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.235.076 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| W2Cl10 | |
| Molar mass | 361.1 g/mol |
| Appearance | black crystals hygroscopic |
| Density | 3.86 g/cm3 |
| Melting point | 248 °C (478 °F; 521 K) |
| Boiling point | 275.6 °C (528.1 °F; 548.8 K) |
| +387.0·10−6 cm3/mol | |
| Hazards | |
| GHS labelling:[1] | |
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| Danger | |
| H302, H314 | |
| Related compounds | |
Related compounds |
Tungsten(IV) chloride Tungsten hexachloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis
The material is prepared by reduction of tungsten hexachloride. One method involves the use of tetrachloroethylene as the reductant[2]
- 2 WCl6 + C2Cl4 → W2Cl10 + C2Cl6
The blue green solid is volatile under vacuum and slightly soluble in nonpolar solvents. The compound is oxophilic and is highly reactive toward Lewis bases.
When the same reduction is conducted in the presence of tetraphenylarsonium chloride, one obtains instead the hexachlorotungstate(V) salt:[3]
- 2 WCl6 + Cl2C=CCl2 + 2 (C6H5)4AsCl → 2 (C6H5)4As[WCl6] + Cl3C−CCl3