Potassium selenide

Potassium selenide
Names
IUPAC name
Potassium selenide
Other names
Dipotassium selenide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.817 Edit this at Wikidata
EC Number
  • 215-198-6
UNII
  • InChI=1S/2K.Se/q2*+1;-2
    Key: VZZSRKCQPCSMRS-UHFFFAOYSA-N
  • [K+].[K+].[Se-2]
Properties
K2Se
Molar mass 157.16
Appearance clearish 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:
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
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.

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 ([1], 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 ([2], p. 336, at Google Books).
  3. ^ "Potassium selenide" (2017) at ChemicalBook (database).


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