Erbium(III) selenide

Identifiers
CAS Number	12020-38-1 Y
3D model (JSmol)	Interactive image
ChemSpider	4891871
ECHA InfoCard	100.031.494
EC Number	234-657-1
PubChemCID	6336878
InChI InChI=1S/2Er.3Se Key: SAJINCSOEUABRO-UHFFFAOYSA-N
SMILES [Se].[Se].[Se].[Er].[Er]
Properties
Chemical formula	Er2Se3
Molar mass	571.431 g·mol−1
Appearance	green-brown[1] or yellow crystals[2]
Density	6.83 g·cm−3[1] 6.855 g·cm−3[2]
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). Infobox references

Erbium(III) selenide is an inorganic compound with a chemical formula of Er₂Se₃.

Erbium(III) selenide can be obtained by the reaction oferbium andselenium:

2 Er + 3 Se → Er₂Se₃

It can also be prepared by reactingerbium oxide andhydrogen selenide at high temperature.^[3]

Er₂O₃ + 3 H₂Se → Er₂Se₃ + 3 H₂O

Erbium(III) selenide is anorthorhombic crystal with a Sc₂S₃ structure and a space group ofFddd.^[2] It reacts withmagnesium selenide at 1000 °C to obtain MgEr₂Se₄.^[4]

• Anna Kornienko, J. H. Melman, G. Hall, T. J. Emge, John G. Brennan (2002-01-01)."Chalcogen Rich Lanthanide Clusters from Halide Starting Materials (II): Selenido Compounds".Inorganic Chemistry.41 (1):121–126.doi:10.1021/ic010740o.ISSN 0020-1669.PMID 11782150. Retrieved2023-06-13.{{cite journal}}: CS1 maint: multiple names: authors list (link)

• Erbium compounds
• Selenides

• CS1 maint: multiple names: authors list
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