Chromium(IV) fluoride
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Names | |
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IUPAC name Chromium(IV) fluoride | |
Other names Chromium fluoride, Chromium tetrafluoride | |
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Properties | |
Chemical formula | 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] |
Solubility in water | reacts with water[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references |
Chemical compound
Chromium(IV) fluoride is an inorganic compound with the chemical formula CrF4. It has a dark greenish-black color when solid. It rapidly hydrolysizes 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 will react with water:
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) [1960]. 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.
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- Cr(CO)6
Organochromium(0) compounds |
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- CrH
Organochromium(I) compounds |
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- CrH2
- Cr3C2
- Cr(C2O4)
- Cr(CH3CO2)2
- CrSi2
- CrO
- CrS
- CrSO4
- CrSe
- CrF2
- CrCl2
- CrBr2
- CrI2
Organochromium(II) compounds |
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- Cr3C2
- CrB
- [Cr3O(CH3CO2)6(H2O)3]+[CH3CO2]−
- CrN
- Cr(NO3)3
- CrPO4
- Cr2O3
- Cr(OH)3
- Cr2S3
- Cr2(SO4)3
- Cr2Te3
- CrF3
- CrCl3
- Cr(ClO4)3
- CrBr3
- CrI3
- CrSi
- CrO2
- CrF4
- CrCl4
- CrBr4
- CrI4
- K3Cr(O2)4
- CrF5
- CrO3
- CrO(O2)2
- H2CrO4/H2Cr2O7
- CrO2F2
- CrOF4
- CrO2Cl2
- CrO2Br2
- [C5H5NH]+CrO3Cl−
- CrF6 (hypothetical)