Barium selenide

Barium selenide is an inorganic compound, with the chemical formula of BaSe. It is a white solid although typically samples are colored owing to the effects of air oxidation.^[3]

Barium selenide

Identifiers
CAS Number	1304-39-8 Y
3D model (JSmol)	Interactive image
ChemSpider	8010098
ECHA InfoCard	100.013.755
EC Number	215-130-5
PubChem CID	9834377
UNII	42Z7S6FJNV
CompTox Dashboard (EPA)	DTXSID7061649
InChI InChI=1S/Ba.Se/q+2;-2 Key: RJWLRCHYHHXJLX-UHFFFAOYSA-N
SMILES [Se-2].[Ba+2]
Properties
Chemical formula	BaSe
Molar mass	216.298 g·mol−1
Appearance	white solid
Structure[1]
Crystal structure	NaCl type (cubic)
Space group	Fm3m (No. 225)
Lattice constant	a = 662.9 pm
Formula units (Z)	4
Hazards
GHS labelling:[2]
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H373, H410
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

BaSe has the lowest energy band gap among alkaline earth chalcogenides.^[4]

Preparation

Barium selenide can be obtained by the reduction of barium selenate in hydrogen flow:.^[3][5]

BaSeO₄ + H₂ → BaSe + 4 H₂O

It can also be obtained by reacting selenium with barium carbonate or barium oxide at high temperature:^{[citation needed]}

2 BaCO₃ + 5 Se → 2 BaSe + 3 SeO₂ + CO₂

Related compounds

Barium can also forms a series of polyselenide compounds, such as Ba₂Se₃, BaSe₂ and BaSe₃.^[1]

References

1. Okamoto, H (August 1991). "The Ba-Se (Barium-Selenium) system". Journal of Phase Equilibria. 12 (4): 467–469. doi:10.1007/BF02645971. ISSN 1054-9714. S2CID 95845653.
2. "C&L Inventory". echa.europa.eu.
3. P. Ehrlich (1963). "Alkaline Earth Metals". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2pages=939. NY, NY: Academic Press.
4. V. V. Sobolev, D. А. Merzlyakov, V. Val. Sobolev (March 2017). "A Study of the Optical Properties of Barium Selenide Crystals. I. Fundamental Functions". Journal of Applied Spectroscopy. 84 (1): 59–65. Bibcode:2017JApSp..84...59S. doi:10.1007/s10812-017-0427-1. ISSN 0021-9037. S2CID 254609774. Retrieved 2018-08-09.{{cite journal}}: CS1 maint: multiple names: authors list (link)
5. Handbuch der präparativen anorganischen Chemie Bd. 2. / Unter Mitarb. von M. Baudler ... Marianne Baudler (3., umgearb. Aufl ed.). Stuttgart. 1978. p. 949. ISBN 978-3-432-87813-3. OCLC 310719490.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)