Yttrium (III) sulfide

Crystal structure
__ Y 3+      __ S 2−
General
Surname	Yttrium (III) sulfide
other names	Diyttrium trisulfide Yttrium sulfide
Ratio formula	Y 2 S 3
Brief description	yellow crystals, rotten egg smell
External identifiers / databases
CAS number 12039-19-9 EC number 234-887-2 ECHA InfoCard 100.031.703 PubChem 166021 ChemSpider 145469 Wikidata Q415385
properties
Molar mass	274.01 g mol −1
Physical state	firmly
density	3.87 g cm −3
Melting point	1925 ° C
solubility	reacts with water
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 261-315-319-335 EUH: 029 P: 302 + 352
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Yttrium (III) sulfide is an inorganic chemical compound of the element yttrium with sulfur and belongs to the group of sulfides .

Extraction and presentation

Yttrium (III) sulfide can be obtained by reacting yttrium (III) oxide with hydrogen sulfide at 1460 ° C.

${\displaystyle {\ce {Y2O3 + 3 H2S -> Y2S3 + 3 H2O}}}$

It is also possible to display it by reacting elementary yttrium with sulfur in an evacuated glass tube which is placed in a 2-zone furnace. The zone temperatures are 400 ° C and 100 ° C. After all the sulfur has reacted, the ampoule is tempered at 1000 ° C and the compound is obtained in polycrystalline form:

${\displaystyle {\ce {2 Y + 3 S -> Y2S3}}}$

properties

Yttrium (III) sulfide is a moisture-sensitive yellow solid. It has a cubic crystal structure and a band gap of 2.58 eV. Yttrium (III) sulfide is used in tube technology and in the semiconductor industry (for doping ).

Individual evidence

1. ↑ ^{a b c} Data sheet Yttrium (III) sulfide, 99.9% (REO) from AlfaAesar, accessed on December 7, 2019 ( PDF )(JavaScript required) .
2. ↑ ^{a b} WebElements: Diyttrium trisulphide
3. ↑ Data sheet Yttrium sulfide (PDF; 914 kB) from Prochemonline, accessed on January 3, 2018.
4. ↑ G. Meyer, Lester R. Morss (Ed.): Synthesis of Lanthanide and Actinide Compounds . Springer, 1991, ISBN 0-7923-1018-7 , pp. 328 ( limited preview in Google Book search).
5. ^ AW Sleight and DP Kelly: Rare-earth sesquisulfides, Ln ₂ S ₃ . In: Aaron Wold and John K. Ruff (Eds.): Inorganic Syntheses . tape 14 . McGraw-Hill Book Company, Inc., 1973, ISBN   07-071320-0  ( defective ) , p. 152-155 (English).
6. ↑ Patent US7081705 : Luminescent device, display device, and display device control method. Published on January 20, 2005 , Inventors: KENYA HORI, MASAYUKI ONO, TOSHIYUKI AOYAMA, MASARU ODAGIRI. ‌