Thiophosphoryl bromide

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Thiophosphoryl bromide
Names
Other names
Thiophosphoryl tribromide
Phosphorus thiobromide
Phosphorothioic tribromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.021.367 Edit this at Wikidata
EC Number
  • 223-502-3
  • InChI=1S/Br3PS/c1-4(2,3)5
    Key: OWNZHTHZRZVKSQ-UHFFFAOYSA-N
  • S=P(Br)(Br)Br
Properties
PSBr3
Molar mass 302.75 g·mol−1
Appearance yellow crystals[1][2]
Density 2.85 g cm−3[2]
Melting point 37.8 °C (100.0 °F; 310.9 K)
Boiling point 212 °C (414 °F; 485 K) decomposes[2]
Structure[3]
Cubic
Pa3, No. 205
a = 11.03 Å, b = 11.03 Å, c = 11.03 Å
Tetrahedral at the P atom
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Thiophosphoryl bromide is an inorganic compound with the formula PSBr3.[1]

Thiophosphoryl bromide can be prepared by heating phosphorus tribromide with phosphorus pentasulfide, or with elemental sulfur in an inert atmosphere at 130 °C.[4]

Thiophosphoryl bromide is one product of the bromination of P4S7 in cold carbon disulfide:[1]

3 P4S7 + 12 Br2 → 2 PBr3 + 2 PSBr3 + 2 P2S6Br2 + 2 P2S5Br4

Structure and properties

Reactions

References

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