Antimony (III) selenide

Crystal structure
__  Sb 3+      __  Se 2−
Crystal system	orthorhombic
Space group	Pnma (No. 62)
Lattice parameters	a = 1179.39 pm b = 398.58 pm c = 1164.78 pm
General
Surname	Antimony (III) selenide
Ratio formula	Sb 2 Se 3
Brief description	gray solid
External identifiers / databases
CAS number 1315-05-5 EC number 215-256-0 ECHA InfoCard 100,013,870 PubChem 6391662 Wikidata Q2985253
properties
Molar mass	480.38 g mol −1
Physical state	firmly
density	5.843 g cm −3
Melting point	611 ° C
solubility	very little soluble in water
safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary danger H and P phrases H: 301-330-373-410 P: 260-301 + 310-304 + 340-320-330-405-501
Thermodynamic properties
ΔH f 0	−127.6 kJ mol −1
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Antimony (III) selenide is an inorganic chemical compound from the group of selenides . In nature, the compound is known as a rare mineral called antimony elite .

Extraction and presentation

Antimony (III) selenide can be produced by reacting hydrogen selenide with a potassium antimonyl tartrate solution and by melting the individual elements together in a stoichiometric ratio.

${\displaystyle {\ce {2Sb + 3Se -> Sb2Se3}}}$

properties

Antimony (III) selenide is a gray solid that is very sparingly soluble in water. It is a semiconductor and has an orthorhombic crystal structure with the space group Pnma (space group no. 62) .

use

Antimony (III) selenide is used to produce large Zintl ions (Sb ₁₂ Se ₂₀ ) ⁴⁻ .

Individual evidence

1. ↑ ^{a b} G. P. Voutsas, AG Papazoglou, PJ Rentzeperis, D. Siapkas: The crystal structure of antimony selenide, Sb2Se3. In: Journal of Crystallography. 171, 1985, pp. 261-268, doi: 10.1524 / zkri.1985.171.3-4.261 .
2. ↑ ^{a b c d e f g h} data sheet Antimony (III) selenide, 99.999% (metals basis) from AlfaAesar, accessed on August 16, 2013 ( PDF )(JavaScript required) .
3. ↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling it falls under the group entries for antimony compounds, with the exception of the tetroxide (Sb2O4), pentoxide (Sb2O5), trisulphide (Sb2S3) , pentasulphide (Sb2S5) and those specified elsewhere in this Annex and selenium compounds with the exception of cadmium sulphoselenide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 18, 2017. Distributors can expand the harmonized classification and labeling .
4. ↑ M. Binnewies, E. Milke: Thermochemical Data of Elements and Compunds . 2nd Edition. Wiley-VCH, Weinheim 2002, ISBN 3-527-30524-6 , pp. 828 .
5. ^ Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . Taylor & Francis US, 2011, ISBN 978-1-4398-1462-8 , pp. 39 ( limited preview in Google Book search).
6. ^ JJ Zuckerman: Inorganic Reactions and Methods, The Formation of Bonds to Group VIB (O, S ...) . John Wiley & Sons, 2009, ISBN 978-0-470-14540-1 , pp. 152 ( limited preview in Google Book search).
7. ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 716 f . ( limited preview in Google Book search).
8. ↑ Data sheet Antimony (III) selenide, 99.99% trace metals basis from Sigma-Aldrich , accessed on August 16, 2013 ( PDF ).