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Dibromosilane

Dibromosilane is an inorganic compound, a bromine derivative of monosilane with the formula SiH 2 Br 2 , a colorless liquid.

Dibromosilane
Are common
Systematic
name
Dibromosilane
Traditional namesSilicon Dihydride Dibromide
Chem. formulaSiH 2 Br 2
Physical properties
conditioncolorless liquid
Molar mass189.91 g / mol
Density2.17 g / cm³
Thermal properties
T. melt.-70.1 ° C
T. bale.66 ° C
Cr. pace.277 ° C
Cr. pressure53 atm
Like heat resistant.65.5 J / (mol · K)
Classification
Reg. CAS number13768-94-0
PubChem
Smiles
Inchi

Getting

  • The reaction of hydrogen bromide and silicon :
Si+2HBr→360-400oCSiH2Br2{\ displaystyle {\ mathsf {Si + 2HBr \ {\ xrightarrow {360-400 ^ {o} C}} \ SiH_ {2} Br_ {2}}}} {\displaystyle {\mathsf {Si+2HBr\ {\xrightarrow {360-400^{o}C}}\ SiH_{2}Br_{2}}}}
Si+3HBr→360-400oCSiHBr3+H2{\ displaystyle {\ mathsf {Si + 3HBr \ {\ xrightarrow {360-400 ^ {o} C}} \ SiHBr_ {3} + H_ {2}}}} {\displaystyle {\mathsf {Si+3HBr\ {\xrightarrow {360-400^{o}C}}\ SiHBr_{3}+H_{2}}}}
Si+fourHBr→360-400oCSiBrfour+2H2{\ displaystyle {\ mathsf {Si + 4HBr \ {\ xrightarrow {360-400 ^ {o} C}} \ SiBr_ {4} + 2H_ {2}}}} {\displaystyle {\mathsf {Si+4HBr\ {\xrightarrow {360-400^{o}C}}\ SiBr_{4}+2H_{2}}}}
the resulting bromide mixture was separated by fractional distillation .

Physical Properties

Dibromosilane forms a colorless liquid.

Literature

  • Inorganic Synthesis Guide: 6 Vol. / Ed. Brower, G. - M .: Mir, 1985 .-- T. 3 .-- 392 p.
  • CRC Handbook of Chemistry and Physics . - 89th Edition. - Taylor and Francis Group, LLC, 2008-2009.
  • Adrianov K.A. Organosilicon compounds. - M .: State Scientific and Technical Publishing House of Chemical Literature, 1955. - 521 p.


Source - https://ru.wikipedia.org/w/index.php?title=Dibromosilane&oldid=92832296


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Clever Geek | 2019