| Arsenic pentafluoride | |
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Arsenic pentafluoride |
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Other names
Arsenic(V) fluoride, |
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| Identifiers | |
| CAS number | 7784-36-3 |
| PubChem | 82223 |
| ChemSpider | 74203 |
| ChEBI | CHEBI:30530 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | AsF5 |
| Molar mass | 169.9136 g mol-1 |
| Appearance | colorless gas |
| Density | 2.138 g cm-3[1] |
| Melting point |
-79.8 ˚C[1] |
| Boiling point |
-52.8 ˚C[1] |
| Solubility in benzene | soluble |
| Hazards | |
| EU classification | Toxic (T) Dangerous for the environment (N) |
| R-phrases | R23/25, R50/53 |
| S-phrases | (S1/2), S20/21, S28, S45, S60, S61 |
| NFPA 704 |
0
4
1
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| Related compounds | |
| Related group 5 fluorides | Phosphorus pentafluoride Antimony pentafluoride Bismuth pentafluoride |
| Related compounds | Arsenic pentachloride Arsenic trifluoride Arsenic pentoxide |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Arsenic pentafluoride is a chemical compound of arsenic and fluorine. The oxidation state of arsenic is +5.
Contents |
Arsenic pentafluoride can be prepared by direct combination of arsenic and fluorine[2]:
It can also be prepared by the reaction of arsenic trifluoride and fluorine:
Arsenic pentafluoride is a colourless gas and has a trigonal bipyramidal structure.[2] In the solid state the axial As-F bond lengths are 171.9 pm and the equatorial 166.8 pm.[2]
Arsenic pentafluoride forms halide complexes and is a powerful acceptor as shown by the reaction with sulfur tetrafluoride forming an ionic complex.[3]
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