Potassium selenide

Inorganic compound

Potassium selenide
Names

IUPAC name Potassium selenide
Other names Dipotassium selenide
Identifiers
CAS Number	1312-74-9^N
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^[1]
Density	2.29 g/cm³^[2]
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

Chemical compound

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).