Bismuth trifluoride
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| Bismuth trifluoride | |
|---|---|
| IUPAC name | Bismuth(III) fluoride |
| Other names | Bismuth trifluoride |
| Identifiers | |
| CAS number | [7787-61-3] |
| Properties | |
| Molecular formula | BiF3 |
| Molar mass | 265g mol-1 |
| Appearance | grey-white powder |
| Density | 5.32 g cm-3[1] |
| Melting point |
649˚C[2] |
| Solubility in water | Insoluble in water[1] |
| Hazards | |
| Main hazards | Irritant |
| R-phrases | R36/38 |
| S-phrases | S26 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Bismuth trifluoride is a chemical compound of bismuth and fluorine. The chemical formula is BiF3. It is a grey-white powder melting at 649°C.
[edit] Synthesis
Bismuth trifluoride can be prepared by reacting bismuth(III) oxide with hydrofluoric acid[2]:
- Bi2O3 + 6HF → BiF3 + 3H2O
[edit] Structure
β-BiF3 has the YF3 structure where the bismuth atom has distorted 9 coordination, tricapped trigonal prism.[3] This structure is generally considered to be ionic, and contrasts with fluorides of the lighter members of group 5, phosphorus trifluoride,PF3,arsenic trifluoride, AsF3 and antimony trifluoride, SbF3 where MX3 molecular units are present in the solid.[3]
[edit] References
- ^ a b http://www.alfa-chemcat.com/daten_msds/D/11844_-_D.pdf
- ^ a b Greenwood, N. N.; Earnshaw, A. (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.
- ^ a b Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications ISBN 0-19-855370-6
