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| Names | |
|---|---|
| IUPAC name Rubidium bromide | |
| Other names Rubidium(I) bromide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider |
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| ECHA InfoCard | 100.029.238 |
| UNII | |
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| 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 | |
| −56.4·10−6 cm3/mol | |
| Hazards | |
| Flash point | Non-flammable |
| Related compounds | |
Otheranions | Rubidium fluoride Rubidium chloride Rubidium iodide Rubidium astatide |
Othercations | Lithium bromide Sodium bromide Potassium bromide Caesium bromide Francium bromide |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Rubidium bromide is aninorganic compound with thechemical formulaRbBr. It is asalt ofhydrogen bromide. It consists ofbromideanionsBr− andrubidiumcationsRb+. It has aNaCl crystal structure, with a lattice constant of 685 picometres.[1]
There are several methods for synthesising rubidium bromide. One involves reactingrubidium hydroxide withhydrobromic acid:
Another method is to neutralizerubidium carbonate with hydrobromic acid:
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.
