Thulium (II) bromide
Crystal structure | |||||||
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__ Tm 2+ __ Br - | |||||||
General | |||||||
Surname | Thulium (II) bromide | ||||||
other names |
Thulium dibromide |
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Ratio formula | TmBr 2 | ||||||
Brief description |
dark green solid |
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External identifiers / databases | |||||||
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properties | |||||||
Molar mass | 328.74 g mol −1 | ||||||
Physical state |
firmly |
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Melting point |
619 ° C |
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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 . |
Thulium (II) bromide is an inorganic chemical compound of thulium from the group of bromides .
Extraction and presentation
Thulium (II) bromide can be obtained by reducing thulium (III) bromide with thulium in a vacuum at 800 to 900 ° C.
properties
Thulium (II) bromide is a dark green solid. The connection is extremely hygroscopic and can only be stored and handled under carefully dried protective gas or in a high vacuum. In air, thulium (II) bromide changes into hydrates with absorption of moisture , but these are unstable and more or less quickly convert into oxide bromides with evolution of hydrogen . These processes take place much faster with water. The compound has a crystal structure of strontium iodide type.
Individual evidence
- ↑ a b c d e Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1081.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.