Rubidium fluoride
Appearance
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Names | |
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Other names
Rubidium(I) Fluoride
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.033.262 |
PubChem CID
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RTECS number |
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UNII | |
CompTox Dashboard (EPA)
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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) | |
−31.9·10−6 cm3/mol | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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Toxic |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Related compounds | |
Other anions
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Rubidium chloride Rubidium bromide Rubidium iodide Rubidium astatide |
Other cations
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Lithium fluoride Sodium fluoride Potassium fluoride Caesium fluoride Francium fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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:[1]
- RbOH + HF → RbF + H2O
Another method is to neutralize rubidium carbonate with hydrofluoric acid:[1]
- 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:[1]
- 2Rb + F2 → 2RbF
References
- ^ a b c "WebElements". Archived from the original on 2008-04-18. Retrieved 23 February 2006.
- "Rubidium compounds: rubidium fluoride". WebElements: the periodic table on the web. WebElements. Retrieved 16 November 2011.