Potassium selenide

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]
Melting point	800 °C (1,470 °F; 1,070 K)^[3]
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).

v t e Potassium compounds
H, (pseudo)halogens	KF KHF₂ KH KCl KClO KClO₃ KClO₄ KBr KBrO₃ KI KIO₃ KIO₄ KAt KCN KCNO KOCN KSCN
chalcogens	K₂O KOH K₂O₂ KO₂ KO₃ K₂S KHS K₂SO₃ KHSO₃ K₂SO₄ KHSO₄ KHSO₅ K₂S₂O₃ K₂S₂O₅ K₂S₂O₇ K₂S₂O₈ K₂Se K<sub>2</sub>SeO<sub>3</sub> K₂SeO₄ K₂Te K₂TeO₃ K<sub>2</sub>TeO<sub>4</sub> K₂Po
pnictogens	K₃N KNH₂ KN₃ KNO₂ KNO₃ K₃P KH₂PO₃ K₃PO₄ K₂HPO₄ KH₂PO₄ KPF₆ KAsO₂ K<sub>3</sub>AsO<sub>4</sub> K<sub>2</sub>HAsO<sub>4</sub> KH₂AsO₄
B, C group	B<sub>4</sub>K<sub>2</sub>O<sub>7</sub> K₂CO₃ KHCO₃ K₂SiO₃ K₂SiF₆ K₂Al₂O₄ K₂Al₂B₂O₇
trans metals	K₂PtCl₄ K₂Pt(CN)₄ K₂TiF₆ K₂PtCl₆ K₂ReCl₆ K₂ZrF₆ K₄Fe(CN)₆ K₃Fe(CN)₆ K₃Fe(C₂O₄)₃ K₂FeO₄ K₂MnO₄ KMnO₄ K₃CrO₄ K₂CrO₄ K₃CrO₈ KCrO₃Cl K₂Cr₂O₇ K<sub>2</sub>Cr<sub>3</sub>O<sub>10</sub> K<sub>2</sub>Cr<sub>4</sub>O<sub>13</sub> K₄Mo₂Cl₈
organic	KHCO₂ KCH₃CO₂ KCF₃CO₂ K₂C₂O₄ KHC₂O₄ KC₁₂H₂₃O₂ KC₁₈H₃₅O₂ C<sub>3</sub>H<sub>2</sub>K<sub>2</sub>O<sub>4</sub> C<sub>4</sub>H<sub>6</sub>KO<sub>4</sub> C<sub>5</sub>H<sub>7</sub>KO<sub>4</sub>

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This page was last edited on 11 May 2024, at 23:25