Indium (III) telluride
| General | ||||||||||||||||
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| Surname | Indium (III) telluride | |||||||||||||||
| other names |
Diindium tritelluride |
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| Molecular formula | In 2 Te 3 | |||||||||||||||
| Brief description |
black solid |
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| External identifiers / databases | ||||||||||||||||
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| properties | ||||||||||||||||
| Molar mass | 612.44 g mol −1 | |||||||||||||||
| Physical state |
firmly |
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| density |
5.8 g cm −3 |
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| Melting point |
667 ° 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 . | ||||||||||||||||
Indium (III) telluride is an inorganic chemical compound of indium from the group of tellurides .
Extraction and presentation
Indium (III) telluride can be obtained by reacting indium with tellurium .
properties
Indium (III) telluride is a black, hard, brittle solid. Two forms with cubic crystal structures and the space group F 4 3 m (space group no. 216) are known of this. The low temperature form changes to the high temperature form at 610 ° C.
Indium (III) telluride in its liquid phase is one of the few liquids that have a density anomaly similar to that of water. The density maximum is around 867 ° C, with domains forming in the liquid, the densities of which can differ by less than 5% (in the range 900–1500 K). The domains differ in whether they have a crystal structure or not. They are about 11 Å in diameter and contain about 30 atoms.
The density anomaly is as follows:
| Temperature [° C] | Density [g · cm −3 ] |
|---|---|
| 675 | 5.526 |
| 700 | 5.532 |
| 725 | 5.534 |
| 750 | 5,539 |
| 775 | 5,547 |
| 800 | 5,554 |
| 825 | 5.557 |
| 850 | 5.557 |
| 875 | 5.557 |
| 900 | 5.552 |
| 925 | 5,547 |
| 950 | 5.538 |
| 975 | 5.528 |
| 1000 | 5.516 |
Individual evidence
- ↑ a b c d e f 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. 872.
- ↑ a b Datasheet Indium (III) telluride, 99.999% trace metals basis at Sigma-Aldrich , accessed on March 23, 2014 ( PDF ).
- ↑ Evgeni Jurevich Tonkov: High Pressure Phase Transformations: A Handbook . CRC Press, 1992, ISBN 2-88124-759-8 , pp. 507 ( limited preview in Google Book search).
- ^ David Michael Rowe: Modules, Systems, and Applications in Thermoelectrics . CRC Press, 2012, ISBN 1-4398-7472-7 , pp. 8-2 ( limited preview in Google Book search).
- ↑ Y. Tsuchiya, S. Takeda, S. Tamaki, Y. Waseda, EFW Seymour: Evidence for structural inhomogeneity in liquid In 2 Te 3 . In: Journal of Physics C: Solid State Physics. 15, 1982, pp. 2561-2575, doi : 10.1088 / 0022-3719 / 15/12/006 .
- ↑ H. Thurn, J. Ruska: ??? Density measurements on melting of binary systems In Te, Sn and Ag Te Te to 1000 ° C . In: Journal of Inorganic and General Chemistry . 426, No. 3, 1976, ISSN 0044-2313 , pp. 237-246. doi : 10.1002 / zaac.19764260302 .