Tungsten(VI) oxytetrachloride
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Names | |
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Other names
Tungsten(IV) chloride oxide
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Identifiers | |
3D model (JSmol)
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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
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Tungsten(VI) oxytetrafluoride Tungsten(VI) oxytetrabromide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tungsten(VI) oxytetrachloride is the inorganic compound with the formula WOCl4. This diamagnetic solid is used to prepare other complexes of tungsten. The yellow-green compound is soluble in nonpolar solvents but it reacts with alcohols and water and forms adducts with Lewis bases.
Structure
The solid consists of weakly associated square pyramidal monomers.[2] The compound is classified as an oxyhalide.
Synthesis and reactions
WOCl4 is prepared from tungsten trioxide:[3]
WOCl4 is Lewis acidic. It is a precursor to catalysts used for polymerization of alkynes.[4]
References
- ^ "Tungsten tetrachloride oxide". pubchem.ncbi.nlm.nih.gov. Retrieved 12 December 2021.
- ^ Hess, H.; Hartung, H. (1966). "Die Kristallstruktur von Wolframoxidchlorid WOCl4 und Wolframoxidbromid WOBr4". Z. Anorg. Allg. Chem. 34 (3–4): 157–166. doi:10.1002/zaac.19663440306.
- ^ Nielson, A. J. (1985). "Tungsten and Molybdenum Tetrachloride Oxides". Inorganic Syntheses. Inorg. Synth. Inorganic Syntheses. Vol. 23. pp. 195–198. doi:10.1002/9780470132548.ch41. ISBN 9780470132548.
- ^ Hayano, S.; Masuda, T. (1999). "Living Polymerization of [o-(Trifluoromethyl)phenyl]acetylene by WOCl4-Based Catalysts such as WOCl4-n-Bu4Sn-t-BuOH (1:1:1)". Macromolecules. 32: 7344–7348. doi:10.1002/zaac.19663440306.
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