Tungsten (VI) oxide tetrafluoride

Structural formula
No drawing available
General
Surname	Tungsten (VI) oxide tetrafluoride
other names	Tungsten oxide tetrafluoride
Molecular formula	WOF 4
Brief description	colorless solid
External identifiers / databases
CAS number 13520-79-1 PubChem 139487 Wikidata Q2353163
properties
Molar mass	275.83 g mol −1
Physical state	firmly
density	5.07 g cm −3
Melting point	105 ° C
boiling point	185.9 ° C
solubility	reacts with water soluble in chloroform sparingly soluble in carbon disulfide
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Tungsten (VI) oxide tetrafluoride is a chemical compound of tungsten from the group of oxide fluorides .

Extraction and presentation

Tungsten (VI) oxide tetrafluoride can be obtained by reacting tungsten with a mixture of oxygen and fluorine at high temperatures. It can also be prepared by reacting tungsten (VI) fluoride with water.

${\displaystyle {\ce {WF6 + H2O -> WOF4 + 2 HF}}}$

It is also possible to display it by reacting tungsten (VI) oxide tetrachloride with hydrogen fluoride

${\displaystyle {\ce {WOCl4 + 4HF -> WOF4 + 4HCl}}}$

or by reaction of lead (II) fluoride with tungsten trioxide at 700 ° C.

${\displaystyle {\ce {2PbF2 + WO3 -> WOF4 + 2PbO}}}$

properties

Tungsten (VI) oxide tetrafluoride is a colorless solid that decomposes in water to form tungstic acid.

${\displaystyle {\ce {WOF4 + 2 H2O -> WO3 + 4 HF}}}$

In the solid state, a tetrameric structure was previously assumed, which was later called into question by spectroscopic studies. In the gaseous state, the compound has a monomeric structure. It forms complexes with acetonitrile and other compounds.

Individual evidence

1. ↑ ^{a b c d} Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 1995, ISBN 978-0-8493-8671-8 , pp. 428 ( limited preview in Google Book search).
2. ↑ ^{a b c d} William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 104 ( limited preview in Google Book search).
3. ^ ^{A b c d} Erik Lassner, Wolf-Dieter Schubert: Tungsten Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds . Springer Science & Business Media, 2012, ISBN 978-1-4615-4907-9 , pp. 168 ( limited preview in Google Book search).
4. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
5. ^ ^{A b} Laura Mendicino: Environmental Issues with Materials and Processes for the Electronics and Semiconductor Industries Proceedings of the Fourth International Symposium . The Electrochemical Society, 2001, ISBN 978-1-56677-312-6 , pp. 180 ( limited preview in Google Book Search).
6. ↑ Stephen J. Lippard: Progress in Inorganic Chemistry . John Wiley & Sons, 2009, ISBN 0-470-16679-7 , pp. 245 ( limited preview in Google Book Search).
7. ^ BFG Johnson: Inorganic Chemistry of the Transition Elements . Royal Society of Chemistry, 1976, ISBN 978-0-85186-530-0 , pp. 138 ( limited preview in Google Book search).
8. ↑ William Levason, Gillian Reid, Wenjian Zhang: Coordination complexes of the tungsten (VI) oxide fluorides WOF ₄ and WO ₂ F ₂ with neutral oxygen- and nitrogen-donor ligands. In: Journal of Fluorine Chemistry. 184, 2016, p. 50, doi : 10.1016 / j.jfluchem.2016.02.003 .
9. ↑ Lucile Arnaudet, Roland Bougon, Buu Ban, Pierrette Charpin, Jacques Isabey, Monique Lance, Martine Nierlich, Julien Vigner: Preparation, characterization, and crystal structure of the adducts WOF4.nC5H5N (n = 1, 2). In: Inorganic Chemistry. 28, 1989, p. 257, doi : 10.1021 / ic00301a020 .