Osmium (III) bromide
| General | ||||||||||
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| Surname | Osmium (III) bromide | |||||||||
| other names |
Osmium tribromide |
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| Molecular formula | OsBr 3 | |||||||||
| Brief description |
dark gray solid |
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| External identifiers / databases | ||||||||||
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| properties | ||||||||||
| Molar mass | 429.94 g mol −1 | |||||||||
| Physical state |
firmly |
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| Melting point |
340 ° C (decomposition) |
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| solubility |
practically insoluble in water |
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| safety instructions | ||||||||||
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| Thermodynamic properties | ||||||||||
| ΔH f 0 |
−98 kJ mol −1 |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||
Osmium (III) bromide is a chemical compound of osmium from the bromide group .
Extraction and presentation
Osmium (III) bromide can be obtained by thermal decomposition of osmium (IV) bromide at 300–400 ° C in a closed environment.
More recent studies suggest that the compound does not exist, but that osmium oxide bromide Os 2 OBr 6 is formed in this compound through the presence of air . However, some studies confirm the formation of OsBr 3,4-3,6 phases.
properties
Osmium (III) bromide is a dark gray solid that is practically insoluble in water. The compound crystallizes in the zirconium (III) iodide structure.
Individual evidence
- ↑ a b c d e William M. Haynes: CRC Handbook of Chemistry and Physics, 96th Edition . CRC Press, 2015, ISBN 978-1-4822-6097-7 , pp. 79 ( limited preview in Google Book search).
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ a b A. F. Holleman , N. Wiberg : Inorganische Chemie . 103rd edition. Volume 2: Subgroup elements, lanthanoids, actinides, transactinides. Walter de Gruyter, Berlin / Boston 2016, ISBN 978-3-11-049590-4 , p. 1975 (reading sample: Part C - Subgroup elements. Google book search ).
- ^ Simon Cotton: Chemistry of Precious Metals . Springer Science & Business Media, 1997, ISBN 0-7514-0413-6 , pp. 4 ( limited preview in Google Book search).
- ↑ Harald Schäfer: OsBr 3 or OsO 0.5 Br 3 ? In: Journal of Inorganic and General Chemistry. 535, No. 4, 1986, p. 219, doi: 10.1002 / zaac.19865350425 .
- ^ FR Hartley: Chemistry of the Platinum Group Metals Recent Developments . Elsevier, 2013, ISBN 978-0-08-093395-5 , pp. 475 ( limited preview in Google Book search).