Bismuth
Structural formula | ||||||||||
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General | ||||||||||
Surname | Bismuth | |||||||||
other names |
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Molecular formula | BiH 3 | |||||||||
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properties | ||||||||||
Molar mass | 212.0 g mol −1 | |||||||||
Physical state |
gaseous |
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density |
9.3 kg m −3 |
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boiling point |
16.8 ° C (extrapolated) |
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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 . |
Bismuthine , BiH 3 , also Bismutwasserstoff or bismuth hydrogen called, is a little resistant, gaseous hydrogen compound of the element bismuth .
Extraction / representation
The older literature claims that bismuthane can be made from magnesium bismuthide using hydrochloric acid:
Traces of it are also said to be formed by the reaction of elemental bismuth with hydrochloric acid and magnesium .
The only two reliable works on bismuth are that of Amberger and Bürger:
In this work, bismuthane was represented by dismutation of methylbismutane as follows.
this can be obtained from methyldichlorobismutane
properties
Bismutane is very unstable (it has a high positive standard enthalpy of formation of +278 kJ / mol) and decomposes into bismuth and hydrogen at room temperature .
proof
As with arsenic and antimony hydrogen , the formation of bismuthane can be detected by passing the gas through a heated glass tube and observing the formation of a metal mirror. The bismuth level is insoluble in an ammonium polysulfide solution .
Individual evidence
- ↑ webelements.com (bismuthane)
- ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 .
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ W. Jerzembeck, H. citizens L. Constantin L. Margules, J. Demaison, J. Breidung, W. Thiel (2002). "Bismuthine BiH3: Fact or Fiction? High-Resolution Infrared, Millimeter-Wave, and Ab Initio Studies". Angew. Chem. Int. Ed. 41 (14): 2550-2552.