Sodium hydroselenide
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| Names | |
|---|---|
| IUPAC name Sodium hydroselenide | |
| Other names Sodium biselenide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
PubChem CID | |
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| Properties | |
| NaSeH | |
| Molar mass | 102.969 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Sodium hydroselenide is an inorganic compound with the chemical formula NaSeH. It is a salt of hydrogen selenide. It consist of sodium cations Na+ and hydroselenide anions −SeH. Each unit consists of one sodium, one selenium, and one hydrogen atom. Sodium hydroselenide is a selenium analog of sodium hydroxide NaOH.
Production
[edit]Sodium hydroselenide can be made by reducing selenium with sodium borohydride:
Alternatively it can be made from sodium ethoxide exposed to hydrogen selenide:[1]
- CH3CH2O−Na+ + H2Se → NaSeH + CH3CH2OH
Sodium hydroselenide is not made for storage, instead it is used immediately after production in a fume hood thanks to the appalling odour of hydrogen selenide.
Properties
[edit]Sodium hydroselenide dissolves in water or ethanol. In humid air sodium hydroselenide is changed to sodium polyselenide and elemental selenium.[1]
Sodium hydroselenide is slightly reducing.[1]
Use
[edit]In organic synthesis, hydrogen sodium hydroselenide is a nucleophillic agent for insertion of selenium.[1]
References
[edit]- ^ a b c d Młochowski, Jacek; Syper, Ludwik (2001). "Sodium Hydrogen Selenide". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rs079. ISBN 0471936235.
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