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[]

^ ^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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[rs-1] 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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