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Phosphorus pentabromide is a reactive, yellow solid of formula P Br 5, which has the structure [PBr 4] + Br − (tetrabromophosphonium bromide) in the solid state but in the vapor phase is completely dissociated to PBr 3 and Br 2.
Phosphorus pentachloride, phosphorus pentabromide, and phosphorus heptabromide are ionic in the solid and liquid states; PCl 5 is formulated as PCl 4 + PCl 6 –, but in contrast, PBr 5 is formulated as PBr 4 + Br −, and PBr 7 is formulated as PBr 4 + Br 3 −. They are widely used as chlorinating and brominating agents in organic chemistry.
Phosphoryl bromide is prepared by the reaction between phosphorus pentabromide and phosphorus pentoxide: [4] [5]. 3 PBr 5 + P 2 O 5 → 5 POBr 3. It can also be prepared via the slow addition of liquid bromine to phosphorus tribromide at 0 °C, followed by the slow addition of water and vacuum distillation of the resulting slurry.
Phosphorus pentabromide – PBr 5; Phosphorus pentafluoride – PF 5; Phosphorus pentasulfide – P 4 S 10; Phosphorus pentoxide – P 2 O 5; Phosphorus sesquisulfide – P 4 S 3; Phosphorus tribromide – PBr 3; Phosphorus trichloride – PCl 3; Phosphorus trifluoride – PF 3; Phosphorus triiodide – PI 3; Phosphotungstic acid – H 3 PW 12 ...
Phosphorus pentabromide; Phosphorus tribromide This page was last edited on 30 October 2022, at 12:54 (UTC). Text is available under the Creative Commons ...
Phosphorus heptabromide is an inorganic compound with the chemical formula P Br 7. It is one of the phosphorus bromides. At normal conditions, it forms red prismatic crystals. PBr 7 can be prepared by the sublimation of a mixture of phosphorus pentabromide and bromine. [2] PBr 5 + Br 2 → PBr 7
Triphosphorus pentanitride is an inorganic compound with the chemical formula P 3 N 5. Containing only phosphorus and nitrogen, this material is classified as a binary nitride. While it has been investigated for various applications this has not led to any significant industrial uses.
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