Copper hydride
Crystal structure | ||||||||||||||||
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__ Cu + __ H - | ||||||||||||||||
General | ||||||||||||||||
Surname | Copper hydride | |||||||||||||||
other names |
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Ratio formula | CuH | |||||||||||||||
Brief description |
red-brown solid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 64.55 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
6.38 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 . |
Copper hydride is an inorganic chemical compound of copper from the group of hydrides .
Extraction and presentation
Copper hydride can be obtained by reacting copper iodide with lithium aluminum hydride in pyridine .
It is also possible to prepare pure copper hydride by reacting copper (I) bromide with diisobutylaluminum hydride in pyridine. Copper sulfate is reduced to copper hydride by phosphinic acid .
properties
Copper hydride is a light red-brown powder that is flammable in air. It is resistant up to about 60 ° C, above this temperature (from 110 ° C explosively) it decomposes into the elements. It is soluble in pyridine with a dark red color. It crystallizes in a crystal structure of the wurtzite type with the space group P 6 3 mc (space group no. 186) , a = 2.89 Å, c = 4.63 Å. The enthalpy of formation is 21.3 kJ / mol. In addition to a dimer, the compound can also form a polymer via relatively strong hydrogen bonds.
use
Copper hydride is used as a reagent for the stereoselective synthesis of exocyclic tetrasubstituted enol ethers and olefins .
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. 971.
- ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer, 1998, ISBN 3-642-58842-5 , pp. 428 ( 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. 288.
- ↑ Data sheet Copper hydride (CuH) solution, in toluene from Sigma-Aldrich , accessed on April 1, 2013 ( PDF ).