Caesium selenide

Caesium selenide is an inorganic compound of caesium and selenium. It is a selenide, with the chemical formula of Cs₂Se. It can be prepared by reacting caesium and selenium. It has an inverse fluorite structure, with space group ${\displaystyle Fm{\bar {3}}m}$. There are 4 units per unit cell,^[1] and the other selenides from the same group are similar.

Caesium selenide

Cs+: __ Se2-: __
Identifiers
CAS Number	31052-46-7 Y
3D model (JSmol)	Interactive image
ChemSpider	148025
ECHA InfoCard	100.045.848
EC Number	250-448-8
PubChem CID	169244
CompTox Dashboard (EPA)	DTXSID70953155
InChI InChI=1S/2Cs.Se/q2*+1;-2 Key: KUBAIENASCDSDJ-UHFFFAOYSA-N
SMILES [Se-2].[Cs+].[Cs+]
Properties
Chemical formula	Cs2Se
Molar mass	344.771
Appearance	colourless, highly hygroscopic crystals[1]
Density	4.33 g·cm−3[2]
Solubility in water	hydroyses[3]
Hazards
GHS labelling:[4]
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H373, H410
Related compounds
Other anions	Caesium oxide Caesium sulfide Caesium sulfide Caesium polonide
Other cations	lithium selenide sodium selenide potassium selenide rubidium selenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references