Zinc selenide

Zinc selenide
Names
	Other names Zinc selenide; Stilleite
Identifiers
CAS Number	1315-09-9 ;
3D model (JSmol)	zincblende structure: Interactive image; wurtzite structure: Interactive image; wurtzite structure: Interactive image;
ChemSpider	7969585;
ECHA InfoCard	100.013.873
EC Number	215-259-7;
PubChem CID	4298215;
UNII	OWX23150D5 ;
CompTox Dashboard (EPA)	DTXSID80893851 ;
	InChI InChI=1S/Se.Zn Key: SBIBMFFZSBJNJF-UHFFFAOYSA-N;
	SMILES zincblende structure: [SeH+2]12[ZnH2-2][SeH+2]3[ZnH2-2][SeH+2]([ZnH-2]14)[ZnH-2]1[Se+2]5([ZnH-2]38)[Zn-2]26[SeH+2]2[ZnH-2]([Se+2]4)[SeH+2]1[ZnH2-2][SeH+2]3[ZnH-2]2[Se+2][ZnH-2]([SeH+2]6[ZnH-2]([SeH+2])[SeH+2]68)[SeH+2]([ZnH2-2]6)[ZnH-2]35; wurtzite structure: [ZnH2-2]1[Se+2]47[ZnH-2]2[Se+2][ZnH-2]3[Se+2]8([ZnH2-2][SeH+2]([ZnH2-2]4)[ZnH2-2]6)[ZnH-2]4[Se+2][ZnH-2]5[Se+2]6([ZnH2-2]6)[Zn-2]78[Se+2]78[ZnH-2]([SeH+2]69)[SeH+2]5[ZnH2-2][SeH+2]4[ZnH-2]7[SeH+2]3[ZnH2-2][SeH+2]2[ZnH-2]8[SeH+2]1[ZnH2-2]9; wurtzite structure: [ZnH2-2]1[SeH+2]([ZnH2-2]6)[ZnH2-2][SeH+2]7[ZnH-2]2[Se+2][Zn-2]3([Se+2][ZnH-2]9[Se+2]5)[Se+2]18[Zn-2]45[Se+2][ZnH-2]5[SeH+2]6[Zn-2]78[Se+2]78[ZnH2-2][SeH+2]5[ZnH2-2][Se+2]4([ZnH2-2][SeH+2]9[ZnH2-2]4)[ZnH-2]7[Se+2]34[ZnH2-2][SeH+2]2[ZnH2-2]8;
Properties
Chemical formula	ZnSe
Molar mass	144.35 g/mol
Appearance	light yellow solid
Density	5.27 g/cm3
Melting point	1,525 °C (2,777 °F)
Solubility in water	negligible
Band gap	2.82 eV (10 K)
Refractive index (nD)	2.67 (550 nm); 2.40 (10.6 μm)
Structure
Crystal structure	Zincblende (cubic)
Lattice constant	a = 566.8 pm
Coordination geometry	Tetrahedral (Zn2+); Tetrahedral (Se2−)
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−177.6 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H373, H410
Precautionary statements	P260, P261, P264, P270, P271, P273, P301+P310, P304+P340, P311, P314, P321, P330, P391, P403+P233, P405, P501
Related compounds
Other anions	Zinc oxide; Zinc sulfide; Zinc telluride
Other cations	Cadmium selenide; Mercury selenide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Zinc selenide is the inorganic compound with the formula ZnSe. It is a lemon-yellow solid although most samples have a duller color due to the effects of oxidation. It is an intrinsic semiconductor with a band gap of about 2.70 eV at 25 °C (77 °F). ZnSe occurs as the rare mineral stilleite, named after Hans Stille.

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