Phosphorus pentaiodide: Difference between revisions
Content deleted Content added
Bernardirfan (talk | contribs) Missing chemical compound other names |
|||
| (18 intermediate revisions by 4 users not shown) | |||
| Line 1: | Line 1: | ||
{{Redirect-distinguish|PI5|Pi5}} |
{{Redirect-distinguish|PI5|Pi5}} |
||
{{Chembox |
|||
| ⚫ | '''Phosphorus pentaiodide''' is |
||
| IUPACName = Phosphorus(V) iodide |
|||
| OtherNames = {{ubl|Pentaiodophosphorane|Pentaiodophosphorus|Phosphorus pentaiodide|Tetraiodophosphonium iodide}} |
|||
| ImageFile = |
|||
| ImageSize = |
|||
| ImageAlt = |
|||
| ImageName = |
|||
| ImageCaption = |
|||
| ImageFile1 = |
|||
| ImageAlt1 = |
|||
| ImageName1 = |
|||
| ImageCaption1 = |
|||
| ImageFile2 = |
|||
| ImageAlt2 = |
|||
| ImageName2 = |
|||
| ImageCaption2 = |
|||
| Section1 = {{Chembox Identifiers |
|||
| CASNo = |
|||
| ChEBI = |
|||
| ChemSpiderID = |
|||
| EINECS = |
|||
| EC_number = |
|||
| InChI = |
|||
| PubChem = |
|||
| RTECS = |
|||
| SMILES = |
|||
| UNNumber = |
|||
}} |
|||
| Section2 = {{Chembox Properties |
|||
| Formula = {{chem2|PI5}} |
|||
| P=1|I=5 |
|||
| Appearance = Brown-black crystalline solid (disputed)<ref name="claim"></ref> |
|||
| MeltingPtC = 41 |
|||
| MeltingPt_notes = (disputed)<ref name="claim"></ref> |
|||
| BoilingPtC = |
|||
| BoilingPt_notes = |
|||
| Density = |
|||
| Solubility = |
|||
| SolubleOther = |
|||
| VaporPressure = |
|||
}} |
|||
| Section3 = {{Chembox Structure |
|||
| Coordination = |
|||
| CrystalStruct = |
|||
| MolShape = |
|||
}} |
|||
| Section7 = {{Chembox Hazards |
|||
| LD50 = |
|||
| LC50 = |
|||
| MainHazards = |
|||
| NFPA-H = |
|||
| NFPA-F = |
|||
| NFPA-I = |
|||
| NFPA-S = |
|||
| PEL = |
|||
| REL = |
|||
| GHSPictograms = |
|||
| GHSSignalWord = |
|||
| HPhrases = |
|||
| PPhrases = |
|||
}} |
|||
| Section9 = {{Chembox Related |
|||
| OtherCompounds = {{ubl|[[Phosphorus pentafluoride]]|[[Phosphorus pentachloride]]|[[Phosphorus pentabromide]]}} |
|||
}} |
|||
}} |
|||
| ⚫ | '''Phosphorus pentaiodide''' is a hypothetical [[inorganic compound]] with formula {{chem2|PI5|auto=1}}. The existence of this compound has been claimed intermittently since the early 1900s.<ref>Walker and Johnson, J. Chem. Soc. '''87''', 1595 (1905).</ref> The claim is disputed: "The pentaiodide does not exist (except perhaps as {{chem2|PI3*I2}}, but certainly not as {{chem2|[PI4]+I−}}...)".<ref>{{Greenwood&Earnshaw}}</ref> |
||
==Claims== |
|||
Phosphorus pentaiodide was reported to be a brown-black crystalline solid melting at 41 °C produced by the reaction of [[lithium iodide]] and [[phosphorus pentachloride]] in [[methyl iodide]], however, this claim is disputed and probably generated a mixture of [[phosphorus triiodide]] and [[iodine]].<ref name="claim">{{cite journal |author1=N. G. Feshchenko |author2=V. G. Kostina |author3=A. V. Kirsanov |title=Chem ''Inform'' Abstract: SYNTHESIS OF PHOSPHORUS PENTAIODIDE |journal=Russian Journal of General Chemistry |date=1978 |volume=48 |issue=23 |page=195 |doi=10.1002/chin.197823039}}</ref><ref name="refute">{{cite journal |author1=Inis Tornieporth-Getting |author2=Thomas Klapötke |title=The preparation and characterization by Raman spectroscopy of Pl4+AsF6– containing the tetraiodophosphonium cation |journal=Journal of the Chemical Society, Chemical Communications |date=1990 |issue=2 |pages=132–133 |doi=10.1039/C39900000132 |language=en}}</ref> |
|||
Although phosphorus pentaiodide has been claimed to exist in the form of {{chem2|[PI4]+I−}} (tetraiodophosphonium iodide), experimental and theoretical data refutes this claim.<ref name="pi4" /><ref name="claim" /> |
|||
==Derivatives== |
|||
Unlike the elusive {{chem2|PI5}}, the {{chem2|[PI4]+}} cation (tetraiodophosphonium cation) is widely known. This cation is known with the anions [[tetraiodoaluminate]] {{chem2|[AlI4]−}}, [[hexafluoroarsenate]] {{chem2|[AsF6]−}}, [[hexafluoroantimonate]] {{chem2|[SbF6]−}} and tetraiodogallate {{chem2|[GaI4]−}}. <ref name="refute" /><ref name="pi4">{{cite journal |author1=Martin Kaupp |author2=Christoph Aubauer |author3=Günter Engelhardt |author4=Thomas M. Klapötke |author5=Olga L. Malkina |title=The PI+4 cation has an extremely large negative 31P nuclear magnetic resonance chemical shift, due to spin–orbit coupling: A quantum-chemical prediction and its confirmation by solid-state nuclear magnetic resonance spectroscopy |journal=The Journal of Chemical Physics |date=1999 |volume=110 |issue=8 |pages=3897–3902 |doi=10.1063/1.478243 |bibcode=1999JChPh.110.3897K |language=en}}</ref> |
|||
== References == |
== References == |
||
Latest revision as of 02:36, 23 September 2023
| Names | |
|---|---|
| IUPAC name
Phosphorus(V) iodide
| |
Other names
| |
| Identifiers | |
CompTox Dashboard (EPA)
|
|
| Properties | |
| PI5 | |
| Molar mass | 665.49611 g·mol−1 |
| Appearance | Brown-black crystalline solid (disputed)[1] |
| Melting point | 41 °C (106 °F; 314 K) (disputed)[1] |
| Related compounds | |
Related compounds
|
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Phosphorus pentaiodide is a hypothetical inorganic compound with formula PI5. The existence of this compound has been claimed intermittently since the early 1900s.[2] The claim is disputed: "The pentaiodide does not exist (except perhaps as PI3·I2, but certainly not as [PI4]+I−...)".[3]
Claims[edit]
Phosphorus pentaiodide was reported to be a brown-black crystalline solid melting at 41 °C produced by the reaction of lithium iodide and phosphorus pentachloride in methyl iodide, however, this claim is disputed and probably generated a mixture of phosphorus triiodide and iodine.[1][4]
Although phosphorus pentaiodide has been claimed to exist in the form of [PI4]+I− (tetraiodophosphonium iodide), experimental and theoretical data refutes this claim.[5][1]
Derivatives[edit]
Unlike the elusive PI5, the [PI4]+ cation (tetraiodophosphonium cation) is widely known. This cation is known with the anions tetraiodoaluminate [AlI4]−, hexafluoroarsenate [AsF6]−, hexafluoroantimonate [SbF6]− and tetraiodogallate [GaI4]−. [4][5]
References[edit]
- ^ a b c d N. G. Feshchenko; V. G. Kostina; A. V. Kirsanov (1978). "Chem Inform Abstract: SYNTHESIS OF PHOSPHORUS PENTAIODIDE". Russian Journal of General Chemistry. 48 (23): 195. doi:10.1002/chin.197823039.
- ^ Walker and Johnson, J. Chem. Soc. 87, 1595 (1905).
- ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
- ^ a b Inis Tornieporth-Getting; Thomas Klapötke (1990). "The preparation and characterization by Raman spectroscopy of Pl4+AsF6– containing the tetraiodophosphonium cation". Journal of the Chemical Society, Chemical Communications (2): 132–133. doi:10.1039/C39900000132.
- ^ a b Martin Kaupp; Christoph Aubauer; Günter Engelhardt; Thomas M. Klapötke; Olga L. Malkina (1999). "The PI+4 cation has an extremely large negative 31P nuclear magnetic resonance chemical shift, due to spin–orbit coupling: A quantum-chemical prediction and its confirmation by solid-state nuclear magnetic resonance spectroscopy". The Journal of Chemical Physics. 110 (8): 3897–3902. Bibcode:1999JChPh.110.3897K. doi:10.1063/1.478243.
 | This inorganic compound–related article is a stub. You can help Wikipedia by expanding it. |
 | This article about theoretical chemistry is a stub. You can help Wikipedia by expanding it. |