Phosphorus (III) Bromide

Phosphorus bromide
Phosphorus bromide
Are common
Systematic ; name	Phosphorus (III) Bromide
Traditional names	Phosphorus tribromide; phosphorus bromide
Chem. formula	PBr 3
Physical properties
condition	colorless liquid
Molar mass	270.69 g / mol
Density	2,852 g / cm³
Thermal properties
T. melt.	-41.5; -40.5; -40 ° C
T. bale.	172.9; 173.3; 175.3 ° C
Enthalpy of Education	-175.5 kJ / mol
Optical properties
Refractive index	1,697
Classification
Reg. CAS number	7789-60-8
PubChem
Reg. EINECS number
Smiles
Inchi
Reg. EC number	232-178-2
RTECS	TH4460000
UN number
ChemSpider

Phosphorus (III) bromide is a binary inorganic compound of bromine and phosphorus with the formula PBr ₃ , a colorless liquid that reacts with water.

Content

Getting

Bromination of a solution of red phosphorus in carbon disulfide :

{\mathsf {2P+3Br_{2}\ {\xrightarrow {}}\ 2PBr_{3}}}

{\ displaystyle {\ mathsf {2P + 3Br_ {2} \ {\ xrightarrow {}} \ 2PBr_ {3}}}}

Decomposition of phosphorus pentabromide :

{\mathsf {PBr_{5}\ {\xrightarrow {100^{o}C}}\ PBr_{3}+Br_{2}}}

{\ displaystyle {\ mathsf {PBr_ {5} \ {\ xrightarrow {100 ^ {o} C}} \ PBr_ {3} + Br_ {2}}}}

The reaction of phosphorus pentabromide with red phosphorus:

{\mathsf {3PBr_{5}+2P\ {\xrightarrow {}}\ 5PBr_{3}}}

{\ displaystyle {\ mathsf {3PBr_ {5} + 2P \ {\ xrightarrow {}} \ 5PBr_ {3}}}}

Physical Properties

Phosphorus (III) bromide is a colorless liquid that smokes in moist air. Reacts with water and ethanol .

It is soluble in organic solvents: ether , chloroform , carbon disulfide , carbon tetrachloride .

Chemical Properties

Reacts with water:

{\mathsf {PBr_{3}+3H_{2}O\ {\xrightarrow {}}\ H_{3}PO_{3}+3HBr}}

{\ displaystyle {\ mathsf {PBr_ {3} + 3H_ {2} O \ {\ xrightarrow {}} \ H_ {3} PO_ {3} + 3HBr}}}

Reacts with alkalis:

{\mathsf {PBr_{3}+5NaOH\ {\xrightarrow {}}\ Na_{2}HPO_{3}+3NaBr+2H_{2}O}}

{\ displaystyle {\ mathsf {PBr_ {3} + 5NaOH \ {\ xrightarrow {}} \ Na_ {2} HPO_ {3} + 3NaBr + 2H_ {2} O}}}

It is oxidized by oxygen with the formation of phosphorus oxybromide :

{\mathsf {2PBr_{3}+O_{2}\ {\xrightarrow {70-90^{o}C}}\ 2POBr_{3}}}

{\ displaystyle {\ mathsf {2PBr_ {3} + O_ {2} \ {\ xrightarrow {70-90 ^ {o} C}} \ 2POBr_ {3}}}}

Reacts with bromine:

{\mathsf {PBr_{3}+Br_{2}\ {\xrightarrow {100-150^{o}C}}\ PBr_{5}}}

{\ displaystyle {\ mathsf {PBr_ {3} + Br_ {2} \ {\ xrightarrow {100-150 ^ {o} C}} \ PBr_ {5}}}}

Application

Organic synthesis.

Literature

Chemical Encyclopedia / Editorial: Zefirov N.S. et al. - M .: Big Russian Encyclopedia, 1998. - V. 5. - 783 p. - ISBN 5-85270-310-9 .
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Lidin R. A. , Andreeva L. L. , Molochko V. A. Chemical properties of inorganic substances: Textbook. manual for universities - 3rd ed., Rev. - M .: Chemistry , 2000. - 480 p. - ISBN 5-7245-1163-0
<a href=" https://wikidata.org/wiki/Track:Q52153739 "> </a> <a href=" https://wikidata.org/wiki/Track:Q52153731 "> </a> <a href = " https://wikidata.org/wiki/Track:Q52153729 "> </a> <a href=" https://wikidata.org/wiki/Track:Q52153728 "> </a> <a href = " https://wikidata.org/wiki/Track:Q52153736 "> </a>

Phosphorus bromide


Are common
Systematic name	Phosphorus (III) Bromide
Traditional names	Phosphorus tribromide; phosphorus bromide
Chem. formula	PBr ₃
Physical properties
condition	colorless liquid
Molar mass	270.69 g / mol
Density	2,852 g / cm³
Thermal properties
T. melt.	-41.5; -40.5; -40 ° C
T. bale.	172.9; 173.3; 175.3 ° C
Enthalpy of Education	-175.5 kJ / mol
Optical properties
Refractive index	1,697
Classification
Reg. CAS number	7789-60-8
PubChem
Reg. EINECS number
Smiles
Inchi
Reg. EC number	232-178-2
RTECS	TH4460000
UN number
ChemSpider