Tungsten (IV) chloride
Crystal structure | |||||||||||||
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__ W 4+ __ Cl - | |||||||||||||
General | |||||||||||||
Surname | Tungsten (IV) chloride | ||||||||||||
other names |
Tungsten tetrachloride |
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Ratio formula | WCl 4 | ||||||||||||
Brief description |
black solid |
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External identifiers / databases | |||||||||||||
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properties | |||||||||||||
Molar mass | 325.65 g mol −1 | ||||||||||||
Physical state |
firmly |
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density |
4.62 g cm −3 |
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Melting point |
450 ° C (decomposition) |
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solubility |
reacts with water |
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safety instructions | |||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Tungsten (IV) chloride is an inorganic chemical compound of tungsten from the group of chlorides .
Extraction and presentation
Tungsten (IV) chloride can be obtained by reacting tungsten (VI) chloride with aluminum , tetrachloroethene or tungsten hexacarbonyl .
properties
Tungsten (IV) chloride is a black diamagnetic solid that is sensitive to hydrolysis . When heated, it decomposes above 450 ° C to tungsten (II) chloride and tungsten (V) chloride . It has an orthorhombic crystal structure isotypic to that of niobium (IV) chloride (a = 807 pm, b = 889 pm, c = 685 pm). It is sensitive to air and moisture, but can be kept indefinitely under a nitrogen atmosphere. Tungsten (IV) chloride is insoluble in organic solvents.
use
Tungsten (IV) chloride can be used to produce other tungsten (IV) compounds as well as compounds that contain a fourfold tungsten-tungsten compound [WCl 4 ] x .
Individual evidence
- ↑ a b c d Georg Brauer: Handbook of preparative inorganic chemistry . 3., reworked. Edition. tape III . Enke, Stuttgart 1981, ISBN 3-432-87823-0 , pp. 1556 .
- ↑ a b W. M. Haynes (Ed.): CRC handbook of chemistry and physics. A ready-reference book of chemical and physical data . founded by David R. Lide. 93rd edition. CRC Press, Boca Raton 2012, ISBN 978-1-4398-8049-4 , pp. 4–96 (English, limited preview in Google Book Search).
- ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. CRC Press, 2009, ISBN 978-1-4200-9084-0 .
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ a b c Herbert D. Kaesz: Inorganic Syntheses . John Wiley & Sons, 2009, ISBN 0-470-13292-2 , pp. 222 ( limited preview in Google Book search).