Potassium selenide

Last updated
Potassium selenide
Sodium-selenide-unit-cell-1992-CM-3D-balls.png
Names
IUPAC name
Potassium selenide
Other names
Dipotassium selenide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.817 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 215-198-6
PubChem CID
UNII
  • InChI=1S/2K.Se/q2*+1;-2
    Key: VZZSRKCQPCSMRS-UHFFFAOYSA-N
  • [K+].[K+].[Se-2]
Properties
K2Se
Molar mass 157.16
Appearanceclearish wet crystal [1]
Density 2.29 g/cm3 [2]
Melting point 800 °C (1,470 °F; 1,070 K) [3]
reacts
Structure
cubic: antifluorite
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
toxic
GHS labelling:
GHS-pictogram-skull.svg GHS-pictogram-silhouette.svg GHS-pictogram-pollu.svg
Danger
H301, H331, H373, H410
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).

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

Contents

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.

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).
  3. "Potassium selenide" (2017) at ChemicalBook (database).