Rubidium fluoride
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| Names | |
|---|---|
| IUPAC name
Rubidium fluoride | |
| Other names
Rubidium(I) Fluoride | |
| Identifiers | |
13446-74-7  | |
| ChemSpider | 75311 |
| |
| Jmol-3D images | Image |
| PubChem | 83473 |
| RTECS number | VL8740000 |
| |
| Properties | |
| RbF | |
| Molar mass | 104.4662 g/mol |
| Appearance | white crystalline solid |
| Density | 3.557 g/cm3 |
| Melting point | 795 °C (1,463 °F; 1,068 K) |
| Boiling point | 1,408 °C (2,566 °F; 1,681 K) |
| 130.6 g/100 mL (18 °C) | |
| Hazards | |
| Main hazards | Toxic |
| EU Index | Not listed |
| Flash point | Non-flammable |
| Related compounds | |
| Other anions |
Rubidium chloride Rubidium bromide Rubidium iodide |
| Other cations |
Lithium fluoride Sodium fluoride Potassium fluoride Caesium fluoride |
| Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
verify (what is: / ?) | |
| Infobox references | |
Rubidium fluoride (RbF) is the fluoride salt of rubidium. It is a cubic crystal with rock-salt structure.
There are several methods for synthesising rubidium fluoride. One involves reacting rubidium hydroxide with hydrofluoric acid:
- RbOH + HF → RbF + H2O
Another method is to neutralize rubidium carbonate with hydrofluoric acid:
- Rb2CO3 + 2HF → 2RbF + H2O + CO2
Another possible method is to react rubidium hydroxide with ammonium fluoride:
- RbOH + NH4F → RbF + H2O + NH3
The least used method due to expense of rubidium metal is to react it directly with fluorine gas, as rubidium reacts violently with halogens:
- 2Rb + F2 → 2RbF
References
- "Rubidium compounds: rubidium fluoride". WebElements: the periodic table on the web. WebElements. Retrieved 16 November 2011.
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