Dibortetrachloride
Structural formula | ||||||||||
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General | ||||||||||
Surname | Dibortetrachloride | |||||||||
other names |
Tetrachlorodiborane |
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Molecular formula | B 2 Cl 4 | |||||||||
Brief description |
colorless liquid |
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External identifiers / databases | ||||||||||
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properties | ||||||||||
Molar mass | 163.43 g mol −1 | |||||||||
Physical state |
liquid |
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density |
1.5 g cm −3 (0 ° C) |
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Melting point |
−92.6 ° C |
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boiling point |
65.5 ° 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 . |
Dibortetrachloride is a chemical compound of boron from the group of chlorides .
Extraction and presentation
Dibortetrachloride can be obtained by reacting boron trichloride with mercury or copper in an electrical discharge.
properties
Dibortetrachloride is a colorless liquid that dissolves in water to form boric acid and hydrochloric acid .
Like the other boron tetrahalides, it already decomposes at room temperature, the rate of decomposition increasing under the catalytic influence of the decomposition products.
The connection ignites immediately in air.
In the solid state it has an orthorhombic crystal structure with the space group Pbca (space group no. 61) . Dibortetrachloride forms adducts of the type B 2 Cl 4 · 2D with donors D (e.g. hydrogen sulfide) . It reacts with hydrogen to form dichloroborane .
use
Dibortetrachloride can be used to make organoboron compounds. Dibortetrafluoride can be obtained by reaction with antimony trifluoride .
Individual evidence
- ↑ a b c d e Georg Brauer , with the collaboration of Marianne Baudler u. a. (Ed.): Handbook of Preparative Inorganic Chemistry . 3rd, revised edition. tape I . Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , pp. 799 .
- ↑ a b c d Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 314 ( limited preview in Google Book search).
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ^ A b A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1033.
- ^ Wiley-VCH: Ullmann's Fine Chemicals . John Wiley & Sons, 2013, ISBN 978-3-527-68357-4 , pp. 351 ( limited preview in Google Book Search).
- ↑ Grant Urry, James Kerrigan, Theran D. Parsons, HI Schlesinger: Diboron Tetrachloride, B2Cl4, as a Reagent for the Synthesis of Organo-boron Compounds. I. The Reaction of Diboron Tetrachloride with Ethylene. In: Journal of the American Chemical Society. 76, 1954, pp. 5299-5301, doi : 10.1021 / ja01650a011 .
- ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1033.