Tetraiodosilane
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | Tetraiodosilane | |||||||||||||||
other names |
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Molecular formula | SiI 4 | |||||||||||||||
Brief description |
white solid |
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properties | ||||||||||||||||
Molar mass | 535.70 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
4.198 g cm −3 (25 ° C) |
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Melting point |
120.5 ° C |
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boiling point |
287.4 ° 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 . |
Tetraiodsilane (also silicon tetraiodide ) is the periodic derivative of monosilane . It is an inorganic chemical compound of silicon from the group of iodides and silicon tetrahalides .
Extraction and presentation
Tetraiodosilane can be obtained by reacting silicon with iodine or hydrogen iodide .
properties
Silicon tetraiodide is a very moisture- and light-sensitive, colorless crystal mass that melts into a lemon-yellow liquid. When heated (especially in a vacuum) it decomposes easily into the elements. After a while the compound turns reddish due to the deposition of iodine. With water it decomposes into hydrogen iodide and silica . It has a cubic crystal structure with the space group Pa 3 (space group no. 205) .
Individual evidence
- ↑ a b c d e f g data sheet Silicon tetraiodide, ≥99.9% trace metals basis at Sigma-Aldrich , accessed on January 5, 2014 ( PDF ).
- ↑ a b c Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 676.
- ^ A b Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 730 ( limited preview in Google Book search).
- ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 909.