Rubidium bromide
 | |
| Names | |
|---|---|
| IUPAC name
Rubidium bromide | |
| Other names
Rubidium(I) bromide | |
| Identifiers | |
7789-39-1  | |
| ChemSpider | 74217 |
| |
| Jmol-3D images | Image |
| PubChem | 4670918 |
| |
| Properties | |
| RbBr | |
| Molar mass | 165.372 g/mol |
| Appearance | white crystalline solid |
| Density | 3.350 g/cm3 |
| Melting point | 693 °C (1,279 °F; 966 K) |
| Boiling point | 1,340 °C (2,440 °F; 1,610 K) |
| 98 g/100 mL | |
| Hazards | |
| EU Index | Not listed |
| Flash point | Non-flammable |
| Related compounds | |
| Other anions |
Rubidium fluoride Rubidium chloride Rubidium iodide |
| Other cations |
Lithium bromide Sodium bromide Potassium bromide Caesium bromide |
| 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 bromide is the bromide of rubidium. It has a NaCl crystal structure, with a lattice constant of 685 picometres. [1]
There are several methods for synthesising rubidium bromide. One involves reacting rubidium hydroxide with hydrobromic acid:
- RbOH + HBr → RbBr + H2O
Another method is to neutralize rubidium carbonate with hydrobromic acid:
- Rb2CO3 + 2HBr → 2RbBr + H2O + CO2
Rubidium metal would react directly with bromine to form RbBr, but this is not a sensible production method, since rubidium metal is substantially more expensive than the carbonate or hydroxide; moreover, the reaction would be explosive.
References
- ↑ G. Chern, J. G. Skofronick, W. P. Brug ,S. A. Safron (1989). "Surface phonon modes of the RbBr(001) crystal surface by inelastic He-atom scattering". Phys. Rev. B 39 (17): 12838–12844. doi:10.1103/PhysRevB.39.12838.
- WebElements. URL accessed March 1, 2006.
| ||||||