Difference between revisions of "Caesium bromide"
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| Formula = CsBr | | Formula = CsBr | ||
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== External links == | == External links == | ||
Revision as of 17:06, 23 August 2009
| Caesium bromide | |
|---|---|
| |
| IUPAC name | Caesium bromide |
| Other names | Cesium bromide, Caesium(I) bromide |
| Identifiers | |
| InChI | InChI=1/BrH.Cs/h1H;/q;+1/p-1 |
| InChIKey | LYQFWZFBNBDLEO-REWHXWOFAA |
| Standard InChI | InChI=1S/BrH.Cs/h1H;/q;+1/p-1 |
| Standard InChIKey | LYQFWZFBNBDLEO-UHFFFAOYSA-M |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| PubChem | |
| Properties[1] | |
| Chemical formula | CsBr |
| Molar mass | 212.81 g/mol |
| Appearance | White solid |
| Density | 4.44 g/cm3, solid |
| Melting point |
636 °C |
| Boiling point |
1300 °C |
| Solubility in water | 124.3 g/100 ml (25 °C) |
| Structure | |
| Crystal structure | CsCl |
| Space group | Pm3m, No. 221 |
| Lattice constant | a = 429.53 pm |
| Coordination geometry | Cubic (Cs+) Cubic (Br−) |
| Hazards | |
| Material safety data sheet (MSDS) | External MSDS |
| EU index number | not listed |
| Flash point | non-flammable |
| Related compounds | |
| Other anions | Caesium fluoride Caesium chloride Caesium iodide |
| Other cations | Lithium bromide Sodium bromide Potassium bromide Rubidium bromide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Caesium bromide, (CsBr), is an ionic compound of caesium and bromine. It has the caesium chloride structure, with a caesium–bromine distance of 303.72 nm.
Contents
Synthesis
It can be prepared via following reactions:
- CsOH + HBr → CsBr + H2O
- Cs2(CO3) + 2HBr → 2CsBr + H2O + CO2
- Direct synthesis:
- 2Cs + Br2 → 2CsBr
The direct synthesis is vigorous reaction as reaction of caesium with other halogens. Due to its expensiveness, it is not used for preparation.
Uses
Caesium bromide is sometimes used in optics as a beamsplitter component in wide-band spectrophotometers.
References
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-91. ISBN 0-8493-0462-8.
External links
- Physical data, PDF version
- Caesium bromide at webelements.com
- Relaxed Excited States Origin and Structure in Lead-Doped Caesium Bromide
- IR transmission spectrum
- Ultra-violet photoabsorption measurements in alkali iodide and caesium bromide evaporated films
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This page was originally imported from Wikipedia, specifically this version of the article "Caesium bromide". Please see the history page on Wikipedia for the original authors. This WikiChem article may have been modified since it was imported. It is licensed under the Creative Commons Attribution–Share Alike 3.0 Unported license. |
