Tantalum (III) bromide
Structural formula | ||||||||||
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No drawing available | ||||||||||
General | ||||||||||
Surname | Tantalum (III) bromide | |||||||||
other names |
Tantalum tribromide |
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Molecular formula | TaBr 3 | |||||||||
Brief description |
gray-green crystals |
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External identifiers / databases | ||||||||||
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properties | ||||||||||
Molar mass | 420.66 g mol −1 | |||||||||
Physical state |
firmly |
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Melting point |
200 ° C |
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solubility |
reacts with water |
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safety instructions | ||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Tantalum (III) bromide , TaBr 3 , is a salt of tantalum from the group of bromides .
Extraction
The recovery of the compound is prepared by the reduction of tantalum (V) bromide achieved. The vapors of tantalum (V) bromide and hydrogen are passed through a tube at 700 ° C.
properties
Tantalum tribromide reacts with water and alkalis . This creates hydrogen and the tantalum is oxidized to Ta 4+ . For this purpose, the brown solid tantalum (IV) oxide was created as a reaction product, which slowly becomes tantalum (V) oxide under normal conditions . Strong oxidizing agents such as nitric acid or permanganic acid immediately oxidize the tantalum into the tantalum (V) oxide.
Individual evidence
- ↑ a b Tantalum (III) Bromide data sheet from AmericanElements, accessed on June 20, 2019.
- ↑ a b c Ralph C. Young, Thomas J. Hastings: Anhydrous Tantalum Tribromide . J. Am. Chem. Soc., July 1942, pp. 1740 , doi : 10.1021 / ja01259a511 .
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.