Difference between revisions of "Phosphorus pentabromide"
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| − | '''Phosphorus pentabromide''', PBr<sub>5</sub>, is the highest [[bromide]] of [[phosphorus]]. The PBr<sub>5</sub> molecule is unknown: the compound exists as PBr{{su|b=4|p=+}}Br<sup>−</sup> in the solid state, and dissociates to [[phosphorus tribromide]] and [[bromine]] in the gas phase.<ref>{{Greenwood&Earnshaw1st|pages=571–75}}.</ref> It is used as a brominating agent, converting [[carboxylic acid]]s to [[acyl bromide]]s and [[phenol]]s and secondary [[alcohol]]s to the corresponding bromides.<ref name="Kirk-Othmer" | + | {{chembox |
| + | | Name = Phosphorus pentabromide | ||
| + | | OtherNames = Phosphorus(V) bromide | ||
| + | | Section1 = {{Chembox Identifiers | ||
| + | | ChemSpiderID = 56429 | ||
| + | | InChI=1/Br5P/c1-6(2,3,4)5 | ||
| + | | InChIKey = QRKVRHZNLKTPGF-UHFFFAOYAR | ||
| + | | StdInChI=1S/Br5P/c1-6(2,3,4)5 | ||
| + | | StdInChIKey = QRKVRHZNLKTPGF-UHFFFAOYSA-N | ||
| + | | CASNo = 7789-69-7 | ||
| + | | EINECS = 232-186-6 | ||
| + | }} | ||
| + | | Section2 = {{Chembox Properties | ||
| + | | Reference = <ref name="Kirk-Othmer">{{Kirk-Othmer | first1 = S. D. | last1 = Ukeles | first2 = M. | last2 = Freiberg | contribution = Bromine, Inorganic Compounds | doi = 10.1002/0471238961.021815131001031 | year = 2002}}.</ref> | ||
| + | | Formula = PBr<sub>5</sub> | ||
| + | | MolarMass = 430.49 g mol<sup>−1</sup> | ||
| + | | Appearance = red-yellow solid | ||
| + | | Density = | ||
| + | | Solubility = hydrolyzes | ||
| + | | MeltingPt = 83.8 °C | ||
| + | | BoilingPt = 106 °C ''decomp.'' | ||
| + | }} | ||
| + | | Section7 = {{Chembox Hazards | ||
| + | | Reference = <ref>{{GHS class NZ|id=14517|accessdate=2011-1-7}}.</ref> | ||
| + | | EUIndex = not listed | ||
| + | | MSDS = | ||
| + | | GHSPictograms = {{GHS05|Skin Corr. 1C, Eye Dam. 1}} | ||
| + | | GHSSignalWord = DANGER | ||
| + | | HPhrases = {{H-phrases|314|318}} | ||
| + | | PPhrases = {{P-phrases|260|264|280| 301+330+331|303+361+353|363|304+340|310|321|305+351+338| 405|501}} | ||
| + | }} | ||
| + | | Section8 = {{Chembox Related | ||
| + | | OtherAnions = [[Phosphorus pentafluoride]]<br />[[Phosphorus pentachloride]]<br/>[[Phosphorus pentaiodide]] | ||
| + | | OtherCations = [[Arsenic pentabromide]]<br/>[[Antimony pentabromide]]<br/>[[Bismuth pentabromide]] | ||
| + | }} | ||
| + | }} | ||
| + | '''Phosphorus pentabromide''', PBr<sub>5</sub>, is the highest [[bromide]] of [[phosphorus]]. The PBr<sub>5</sub> molecule is unknown: the compound exists as PBr{{su|b=4|p=+}}Br<sup>−</sup> in the solid state, and dissociates to [[phosphorus tribromide]] and [[bromine]] in the gas phase.<ref>{{Greenwood&Earnshaw1st|pages=571–75}}.</ref> It is used as a brominating agent, converting [[carboxylic acid]]s to [[acyl bromide]]s and [[phenol]]s and secondary [[alcohol]]s to the corresponding bromides.<ref name="Kirk-Othmer"/> | ||
==Notes and references== | ==Notes and references== | ||
Revision as of 10:04, 7 January 2011
| Phosphorus pentabromide | |
|---|---|
| Other names | Phosphorus(V) bromide |
| Identifiers | |
| InChI | InChI=1/Br5P/c1-6(2,3,4)5 |
| InChIKey | QRKVRHZNLKTPGF-UHFFFAOYAR |
| Standard InChI | InChI=1S/Br5P/c1-6(2,3,4)5 |
| Standard InChIKey | QRKVRHZNLKTPGF-UHFFFAOYSA-N |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| Properties[1] | |
| Chemical formula | PBr5 |
| Molar mass | 430.49 g mol−1 |
| Appearance | red-yellow solid |
| Melting point |
83.8 °C |
| Boiling point |
106 °C decomp. |
| Solubility in water | hydrolyzes |
| Hazards[2] | |
| EU index number | not listed |
| GHS pictograms | 
|
| GHS signal word | DANGER |
| GHS hazard statements | H314, H318 |
| GHS precautionary statements | P260, P264, P280, P301+330+331, P303+361+353, P363, P304+340, P310, P321, P305+351+338, P405, P501 |
| Related compounds | |
| Other anions | Phosphorus pentafluoride Phosphorus pentachloride Phosphorus pentaiodide |
| Other cations | Arsenic pentabromide Antimony pentabromide Bismuth pentabromide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Phosphorus pentabromide, PBr5, is the highest bromide of phosphorus. The PBr5 molecule is unknown: the compound exists as PBr+4Br− in the solid state, and dissociates to phosphorus tribromide and bromine in the gas phase.[3] It is used as a brominating agent, converting carboxylic acids to acyl bromides and phenols and secondary alcohols to the corresponding bromides.[1]
Notes and references
Notes
References
- ↑ 1.0 1.1 Ukeles, S. D.; Freiberg, M. Bromine, Inorganic Compounds. In Kirk-Othmer Encyclopedia of Chemical Technology; John Wiley: New York, 2002. DOI: 10.1002/0471238961.021815131001031.
- ↑ HSNO Chemical Classification Information Database, <http://www.ermanz.govt.nz/Chemicals/ChemicalDisplay.aspx?SubstanceID=14517> (accessed 7 January 2011), New Zealand Environmental Risk Management Authority.
- ↑ Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; pp 571–75. ISBN 0-08-022057-6.
External links
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See also the corresponding article on Wikipedia. |
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