Titanium (IV) bromide
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | Titanium (IV) bromide | |||||||||||||||
other names |
Titanium tetrabromide |
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Molecular formula | TiBr 4 | |||||||||||||||
Brief description |
amber solid |
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properties | ||||||||||||||||
Molar mass | 367.48 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
3.25 g cm −3 (25 ° C) |
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Melting point |
38-40 ° C |
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boiling point |
230 ° C |
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solubility |
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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 (IV) bromide is an inorganic chemical compound of titanium from the group of bromides .
Extraction and presentation
Titanium (IV) bromide can be obtained by reacting titanium (IV) chloride with hydrogen bromide .
Other ways of obtaining are the reactions:
Very pure titanium (IV) bromide can be produced through the reaction of lead (II) bromide with titanium.
properties
Titanium (IV) bromide is in the form of amber-yellow, octahedral crystals. It is extremely hygroscopic, with hydrolytic decomposition into titanium (IV) oxide and hydrogen bromide. After crystallization from the melt, its crystal structure is isotypic with tin (IV) iodide with the space group Pa 3 (space group no. 205) (a = 1130.0 pm ). During storage, a conversion into the tin (IV) bromide type with the space group P 2 1 / c (No. 14) (a = 1017 pm, b = 709 pm, c = 1041 pm, β = 101.97 °) ).
use
Titanium (IV) bromide is used for the production of titanium disilicide thin films on silicon substrates.
Individual evidence
- ↑ a b c d e f g h i 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. 1348ff.
- ↑ a b c d e f g data sheet Titanium (IV) bromide, anhydrous, powder, 99.99% trace metals basis from Sigma-Aldrich , accessed on August 8, 2012 ( PDF ).
- ^ Jean D'Ans, Ellen Lax: Pocket book for chemists and physicists . Springer DE, 1997, ISBN 3-540-60035-3 , pp. 766 ( limited preview in Google Book search).