Tetrabromosilane

Structural formula
General
Surname	Tetrabromosilane
other names	Silicon (IV) bromide; Silicon tetrabromide;
Molecular formula	SiBr 4
Brief description	colorless liquid with a pungent odor
External identifiers / databases
EC number	232-182-4
ECHA InfoCard	100.029.257
PubChem	82247
Wikidata	Q2012159
properties
Molar mass	347.72 g mol −1
Physical state	liquid
density	2.800 g cm −3
Melting point	5 ° C
boiling point	154 ° C
solubility	reacts violently with water
Refractive index	1.5685 (31 ° C)
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	EUH: 014
	P: 261-305 + 351 + 338-302 + 352-321-405-501
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Tetrabromosilane (also silicon tetrabromide , silicon tetrabromide ) is the perbrominated derivative of monosilane . It is an inorganic chemical compound of silicon from the group of bromides and silicon tetrahalides .

Extraction and presentation

Tetrabromosilane can be obtained by reacting silicon with hydrogen bromide at 600 ° C.

{\ displaystyle \ mathrm {Si + 4 \ HBr \ longrightarrow SiBr_ {4} +2 \ H_ {2}}}

It is also possible to show this by reacting silicon with bromine at 600 ° C or silicon with silver bromide at 650 ° C.

{\ displaystyle \ mathrm {Si + 2 \ Br_ {2} \ longrightarrow SiBr_ {4}}}

{\ displaystyle \ mathrm {Si + 4 \ AgBr \ longrightarrow SiBr_ {4} +4 \ Ag}}

properties

Tetrabromosilane has a tetrahedral structure. It is a moisture-sensitive, colorless liquid with a pungent odor that reacts violently with water, producing hydrogen bromide .

{\ displaystyle \ mathrm {SiBr_ {4} +4 \ H_ {2} O \ longrightarrow Si (OH) _ {4} + 4HBr}}

use

Silicon tetrabromide is used as a silicon doping source in the semiconductor industry.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Datasheet Silicium (IV) bromide from AlfaAesar, accessed on August 2, 2013 ( PDF )(JavaScript required) .
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Index of Refraction of Inorganic Liquids, pp. 4-140.
↑ Schumb, WB Silicobromoform Inorganic Syntheses 1939, Volume 1, pp. 38-42. doi: 10.1002 / 9780470132326 .
↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 671.
^ AF Holleman, Egon Wiberg, Nils Wiberg: Inorganic Chemistry . Academic Press, 2001, ISBN 0-12-352651-5 , pp. 852 ( limited preview in Google Book search).
↑ Matthias Christoph Golling: Molecular beam epitaxy of vertically emitting InGaAs laser structures with ... Cuvillier Verlag, 2004, ISBN 3-86537-350-X , p. 30 ( limited preview in Google Book search).

[Alfa-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Datasheet Silicium (IV) bromide from AlfaAesar, accessed on August 2, 2013 ( PDF )(JavaScript required) .

[CRC90_4_140-2] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Index of Refraction of Inorganic Liquids, pp. 4-140.

[booth-3] Schumb, WB Silicobromoform Inorganic Syntheses 1939, Volume 1, pp. 38-42. doi: 10.1002 / 9780470132326 .

[brauer-4] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 671.

[A._F._Holleman,_Egon_Wiberg,_Nils_Wiberg-5] AF Holleman, Egon Wiberg, Nils Wiberg: Inorganic Chemistry . Academic Press, 2001, ISBN 0-12-352651-5 , pp. 852 ( limited preview in Google Book search).

[Matthias_Christoph_Golling-6] Matthias Christoph Golling: Molecular beam epitaxy of vertically emitting InGaAs laser structures with ... Cuvillier Verlag, 2004, ISBN 3-86537-350-X , p. 30 ( limited preview in Google Book search).