Potassium selenide

Potassium selenide
Names
	IUPAC name Potassium selenide
	Other names Dipotassium selenide
Identifiers
CAS Number	1312-74-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	66596;
ECHA InfoCard	100.013.817
EC Number	215-198-6;
PubChem CID	73968;
UNII	5B5516VCNR;
CompTox Dashboard (EPA)	DTXSID6061658 ;
	InChI InChI=1S/2K.Se/q2*+1;-2 Key: VZZSRKCQPCSMRS-UHFFFAOYSA-N;
	SMILES [K+].[K+].[Se-2];
Properties
Chemical formula	K2Se
Molar mass	157.16
Appearance	clearish wet crystal
Density	2.29 g/cm3
Melting point	800 °C (1,470 °F; 1,070 K)
Solubility in water	reacts
Structure
Crystal structure	cubic: antifluorite
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	toxic
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H373, H410
Precautionary statements	P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P361, P363, P391, P403+P233, P405, P501
Related compounds
Other anions	Potassium oxide; Potassium sulfide; Potassium telluride; Potassium polonide
Other cations	Lithium selenide; Sodium selenide; Rubidium selenide; Caesium selenide
Related compounds	Potassium selenate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Potassium selenide (K₂Se) is an inorganic compound formed from selenium and potassium.

Production

It can be produced by the reaction of selenium and potassium. If the two are combined in liquid ammonia, the purity is higher.

Potassium selenide has a cubic, antifluorite crystal structure.

^ Jean D'Ans, Ellen Lax: Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale, Band 3. 4. Auflage, Springer, 1997, ISBN 978-3-5406-0035-0, S. 692 ([1], p. 692, at Google Books).
^ Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds. CRC Press, 1995, ISBN 978-0-8493-8671-8, S. 336 ([2], p. 336, at Google Books).
^ "Potassium selenide" (2017) at ChemicalBook (database).

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