Boron trisulfide

Crystal structure
	__ B 3+ __ S 2−
General
Surname	Boron trisulfide
other names	Diboron trisulfide; Boron sulfide;
Ratio formula	B 2 S 3
Brief description	pale yellowish solid
External identifiers / databases
EC number	234-504-9
ECHA InfoCard	100.031.355
PubChem	123269
ChemSpider	109881
Wikidata	Q2330068
properties
Molar mass	117.80 g mol −1
Physical state	firmly
density	1.7 g cm −3
Melting point	563 ° C
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Boron trisulfide is an inorganic chemical compound of boron from the group of sulfides .

Extraction and presentation

Boron trisulfide can be obtained by reacting boron with hydrogen sulfide .

{\ displaystyle \ mathrm {2 \ B + 3 \ H_ {2} S \ longrightarrow B_ {2} S_ {3} +3 \ H_ {2}}}

properties

Boron trisulfide is a pale yellowish solid which is extremely sensitive to hydrolysis. The amorphous form has no defined melting point and begins to sublime at around 300 ° C. It also reacts with alcohols, amines and mercaptans . With more sulfur, the compound reacts at 300 ° C to form boron disulfide BS ₂ , which is made up of B ₈ S ₁₆ molecules and whose structure is closely related to that of porphine .

use

Boron trisulfide is used for organic synthesis. It reduces sulfoxides to thiols and reacts with ketones to form thioketones .

Individual evidence

↑ ^a ^b ^c ^d Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 804.
^ ^A ^b William M. Haynes: CRC Handbook of Chemistry and Physics, 93rd Edition . CRC Press, 2012, ISBN 1-4398-8049-2 , pp. 4–53 ( limited preview in Google Book Search).
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ ^A ^b Wiley-VCH: Ullmann's Fine Chemicals . John Wiley & Sons, 2013, ISBN 978-3-527-68357-4 , pp. 351 ( limited preview in Google Book Search).
^ Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2009, ISBN 3-11-020268-9 , p. 772 ( limited preview in Google Book search).

[brauer-1] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 804.

[William_M._Haynes-2] A ^b William M. Haynes: CRC Handbook of Chemistry and Physics, 93rd Edition . CRC Press, 2012, ISBN 1-4398-8049-2 , pp. 4–53 ( limited preview in Google Book Search).

[NV-3] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Wiley-VCH-4] A ^b Wiley-VCH: Ullmann's Fine Chemicals . John Wiley & Sons, 2013, ISBN 978-3-527-68357-4 , pp. 351 ( limited preview in Google Book Search).

[Peter_Paetzold-5] Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2009, ISBN 3-11-020268-9 , p. 772 ( limited preview in Google Book search).