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376949

Sigma-Aldrich

Phosphorus(V) oxybromide

>95%

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Synonym(s):
Phosphorus oxide bromide, Phosphoryl bromide
Linear Formula:
POBr3
CAS Number:
Molecular Weight:
286.69
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

>95%

form

solid

bp

192 °C (lit.)

mp

56 °C (lit.)

density

2.82 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

BrP(Br)(Br)=O

InChI

1S/Br3OP/c1-5(2,3)4

InChI key

UXCDUFKZSUBXGM-UHFFFAOYSA-N

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This Item
79609298220157775
Phosphorus(V) oxybromide >95%

376949

Phosphorus(V) oxybromide

Phosphorus pentoxide puriss. p.a., ACS reagent, ≥98.0% (T)

79609

Phosphorus pentoxide

Phosphorus pentoxide powder, ACS reagent, ≥98.0%

298220

Phosphorus pentoxide

Phosphorus pentachloride reagent grade, 95%

157775

Phosphorus pentachloride

form

solid

form

powder or crystals

form

powder

form

powder

bp

192 °C (lit.)

bp

-

bp

-

bp

-

mp

56 °C (lit.)

mp

340 °C (lit.)

mp

340 °C (lit.)

mp

179-181 °C (subl.) (lit.)

storage temp.

2-8°C

storage temp.

-

storage temp.

-

storage temp.

-

density

2.82 g/mL at 25 °C (lit.)

density

2.3 g/mL at 25 °C (lit.)

density

2.3 g/mL at 25 °C (lit.)

density

-

General description

Reaction of phosphorus pentabromide with phosphorus pentoxide at elevated temperatures affords phosphorus(V) oxybromide. Its Raman spectrum has been studied and the molecule has been reported to exhibit point group symmetry C3v. Phosphorus(V) oxybromide (Phosphorus oxide bromide) participates in the preparation of 1:1 addition ionic compound having melting point at 154·0°C, via reaction with gallium tribromide. This ionic compound contains non-metal cation POBr2+.

Application

Phosphorus(V) oxybromide may be used as brominating reagent in the synthesis of 2,4,6-tribromopyrimidine. It may be used in the preparation of bromoheterocyclic compounds.

pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

supp_hazards

Storage Class

8A - Combustible, corrosive hazardous materials

wgk_germany

WGK 3

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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90. The heats of hydrolysis of some halides and oxyhalides of phosphorus.
Charnley T and Skinner HA.
Journal of the Chemical Society, 450-452 (1953)
Phosphorus oxybromide as a brominating agent; bromopyrimidines.
D R V GOLDING et al.
The Journal of organic chemistry, 12(2), 293-293 (1947-03-01)
The possible existence of the cation POBr2+ and some properties of phosphorus oxybromide, gallium tribromide, and their ionic 1: 1 addition compound.
Greenwood NN and Worrall IJ.
J. Inorg. Nucl. Chem., 6(1), 34-41 (1958)
A facile halogenation of some hydroxyheterocycles using triphenylphosphine and N-halosuccinimide.
Sugimoto O, et al.
Tetrahedron Letters, 40(42), 7477-7478 (1999)
The Raman spectrum and the molecular structure of phosphorus oxybromide.
Gerding H and van Driel M.
Rec. Trav. Chim., 61(6), 419-424 (1942)

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