Sodium hydroselenide

Sodium hydroselenide
Names
	Other names sodium biselenide
Identifiers
CAS Number	12195-50-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	67024398;
PubChem CID	129628184;
	InChI InChI=1S/Na.H2Se/h;1H2/q+1;/p-1 Key: RBRLCUAPGJEAOP-UHFFFAOYSA-M;
	SMILES [Na+].[SeH-];
Properties
Chemical formula	NaSeH
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Sodium hydroselenide is a chemical compound, an inorganic salt; each unit consists of one sodium, one selenium, and one hydrogen atom.

Production

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

Se + NaBH₄ → NaSeH + BH₃(g)

Alternatively it can be made from sodium ethoxide exposed to hydrogen selenide:[1]

NaOEt + H₂Se → NaSeH + HOEt

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

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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[rs-1] Młochowski, Jacek; Syper, Ludwik (2001). "Sodium Hydrogen Selenide". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rs079. ISBN 0471936235.