Sodium hydroselenide

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Sodium hydroselenide
NaSeH.png
Names
IUPAC name
Sodium hydroselenide
Other names
Sodium biselenide
Identifiers
3D model (JSmol)
ChemSpider
PubChem CID
  • InChI=1S/Na.H2Se/h;1H2/q+1;/p-1
    Key: RBRLCUAPGJEAOP-UHFFFAOYSA-M
  • [Na+].[SeH-]
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 Na Se H . It is a salt of hydrogen selenide. It consists 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.

Contents

Production

Sodium hydroselenide can be made by reducing selenium with sodium borohydride:

Se + Na[BH4] → NaSeH + BH3 (g)

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

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

In organic synthesis, hydrogen sodium hydroselenide is a nucleophillic agent for insertion of selenium. [1]

References

  1. 1 2 3 4 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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