Bismuthine

• Bismutwasserstoff
• Bismuth hydrogen

Gaseous

9.3 kg · m-3

16.8 ° C ( extrapolated )

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Bismutan, BiH3, also called Bismutwasserstoff or bismuth, hydrogen is a little resistant, gaseous hydrogen compound of the element bismuth.

Extraction / representation

In the older literature it is claimed that Bismutan can be made from Magnesiumbismutid with hydrochloric acid:

In traces it is to be formed by reduction of elemental bismuth with hydrochloric acid and magnesium.

The only two reliable work on Bismutan are the Amberger and citizens:

In these works Bismutan was represented by dismutation of Methylbismutan as follows.

This can be obtained from Methyldichlorbismutan

Properties

Bismutan is very unstable ( it has a high positive standard enthalpy of formation of 278 kJ / mol) and decomposes even at room temperature in bismuth and hydrogen.

Proof

As arsenic and antimony, the formation of hydrogen can be detected Bismutan by passing the gas through a glass tube heated while monitoring the formation of a metal mirror. The Bismutspiegel is insoluble in ammonium polysulphide.