Titanium (III) iodide
Crystal structure | |||||||
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General | |||||||
Surname | Titanium (III) iodide | ||||||
other names |
Titanium triiodide |
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Ratio formula | TiI 3 | ||||||
Brief description |
purple-black solid |
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External identifiers / databases | |||||||
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properties | |||||||
Molar mass | 428.6 g mol −1 | ||||||
Physical state |
firmly |
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density |
4.9 g cm −3 |
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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 . |
Titanium (III) iodide is an inorganic chemical compound of titanium from the group of iodides .
Extraction and presentation
Titanium (III) iodide can be obtained by reacting titanium with iodine .
It can also be obtained by reducing titanium (IV) iodide with aluminum .
properties
Titanium (III) iodide is in the form of purple-black, needle-shaped crystals that are resistant to 300 ° C when heated in a high vacuum and decompose into titanium (II) iodide and titanium (IV) iodide from 310 ° C. The compound has a hexagonal crystal structure with the space group P 6 3 / mcm (space group no. 193) (a = 714.6 pm , c = 650.2 pm). There is also a modification at low temperature with an orthorhombic crystal structure ( zirconium (III) iodide structure) and the space group Pmnm (No. 59, position 3) .
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 II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1343.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ^ Catherine E. Housecroft, AG Sharpe: Inorganic Chemistry . Pearson Education, 2005, ISBN 0-13-039913-2 , pp. 601 ( limited preview in Google Book search).
- ^ Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2010, ISBN 3-11-020268-9 , p. 204 ( limited preview in Google Book search).
- ↑ Joachim Angelkort, Andreas Schoenleber, Sander van Smaalen : Low- and high-temperature crystal structures of. In: Journal of Solid State Chemistry . 182, 2009, pp. 525-531, doi : 10.1016 / j.jssc.2008.11.028 .