Chromium(IV) fluoride
Today, Chromium(IV) fluoride is a topic of great relevance and interest to a wide audience. Over time, Chromium(IV) fluoride has acquired significant importance in different areas of society, from politics and economics to culture and everyday life. Its impact has been felt both locally and internationally, generating ongoing debates, controversies and investigations. In this article, we will explore the various facets of Chromium(IV) fluoride and analyze its influence in different contexts. From its origins to its current evolution, Chromium(IV) fluoride has proven to be a topic of great relevance and promises to continue being the subject of discussion and analysis in the future.
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| Names | |
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| IUPAC name
Chromium(IV) fluoride
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| Other names
Chromium fluoride, Chromium tetrafluoride
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| CrF4 | |
| Molar mass | 127.9897 g·mol−1 |
| Appearance | green crystals,[1] amorphous brown beads[2] |
| Density | 2.89 g/cm3[1] |
| Melting point | 277 °C (531 °F; 550 K)[1] |
| Boiling point | ~ 400 °C (752 °F; 673 K)[2] |
| reacts with water[1] | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
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Chromium(IV) fluoride is an inorganic compound with the chemical formula CrF4. It has a dark greenish-black color when solid. It rapidly hydrolyzes in presence of moisture in air or directly in water.[3]
Synthesis
Powdered chromium or CrCl3 is exposed to fluorine gas at a temperature of 350-500 °C, which creates a mix of CrF4 and CrF5. The CrF4 settles out as varnish-like brown beads upon cooling.[2]
Reactions
Chromium(IV) fluoride is easily reduced.[4]
It will react with water:
- CrF4 + 2H2O → CrO2 + 4HF
References
- ^ a b c d Perry, Dale L. (2011). Handbook of Inorganic Compounds, Second Edition. Boca Raton, Florida: CRC Press. p. 125. ISBN 978-1-43981462-8. Retrieved 2014-01-10.
- ^ a b c Brauer, Georg (1963) . Handbuch Der Präparativen Anorganischen Chemie [Handbook of Preparative Inorganic Chemistry] (in German). Vol. 1. Stuttgart; New York, New York: Ferdinand Enke Verlag; Academic Press, Inc. p. 258. ISBN 978-0-32316127-5. Retrieved 2014-01-12.
- ^ Clark, H. C.; Sadana, Y. N. (1964-01-01). "Some Reactions of Chromium Tetrafluoride". Canadian Journal of Chemistry. 42 (1): 50–56. doi:10.1139/v64-008. ISSN 0008-4042.
- ^ Benjamin, Sophie L.; Levason, William; Reid, Gillian (2013). "Medium and high oxidation state metal/Non-metal fluoride and oxide–fluoride complexes with neutral donor ligands". Chem. Soc. Rev. 42 (4): 1473. doi:10.1039/C2CS35263J. PMID 23014811.
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