Potassium selenide

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

Potassium selenide
Names
IUPAC name
Potassium selenide
Other names
Dipotassium selenide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.817
EC Number
  • 215-198-6
UNII
Properties
K2Se
Molar mass 157.16
Appearance clearish wet crystal[1]
Density 2.29 g/cm3[2]
reacts
Structure
cubic: antifluorite
Hazards
Main hazards toxic
GHS pictograms
GHS Signal word Danger
GHS hazard statements
 H331, H301, H373, H400, H410
P260, P262, P264, P270, P271, P273, P280, P284, P301+310, P304+340, P310, P314, P320, P321, P330, P361, P363, P391, P403+233, 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

Production

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

Crystal structure

Potassium selenide has a cubic, antifluorite crystal structure.

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References
  1. 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 (, p. 692, at Google Books).
  2. Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds. CRC Press, 1995, ISBN 978-0-8493-8671-8, S. 336 (, p. 336, at Google Books).
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