Iron(III) fluoride
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| Iron(III) fluoride | |
|---|---|
| Other names | iron trifluoride, ferric fluoride |
| Identifiers | |
| CAS number | [7783-50-8] |
| Properties | |
| Molecular formula | FeF3 |
| Molar mass | 112.84 |
| Appearance | pale green solid |
| Density | 3.87 g/cm3 |
| Melting point |
>1000°C |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Iron(III) fluoride is a chemical with the formula FeF3. It can be encountered as the anhydrous form or as the pink trihydrate. The anhydrous form contains octahedral FeF6 units that share vertices.[1] When heated under vacuum it decomposes to give FeF2 and F2.[1] In the gas phase at 1260°K the structure is planar D3h with an Fe-F bond length of 176.3pm.[2]
The formation of ferric fluoride may have been responsible for a fluorine gas cylinder explosion at a University of California lab. [3]
[edit] References
- ^ a b Greenwood, N. N.; Earnshaw, A. (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.
- ^ Hargittai, M; Kolonits M., Tremmel J., Fourquet J. and Ferey G. (January 1990). "The molecular geometry of iron trifluoride from electron diffraction and a reinvestigation of aluminum trifluoride". Structural Chemistry 1 (1): 75–78. doi:.
- ^ A recent explosion of a lecture size cylinder of Hydrogen Fluoride in another UC campus, has renewed concerns that compressed
[edit] External links
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