七フッ化ヨウ素のソースを表示

{{Chembox
|   Name = 七フッ化ヨウ素
|   ImageFile = Iodine-heptafluoride-2D-dimensions.png
<!-- | ImageSize = 120px -->
|   ImageName = Structure of the iodine heptafluoride molecule
|   ImageFileL1 = Iodine-heptafluoride-3D-balls.png
<!-- | ImageSizeL1 = 120px  -->
|   ImageNameL1 = Iodine heptafluoride
|   ImageFileR1 = Iodine-heptafluoride-3D-vdW.png
<!-- | ImageSizeR1 = 120px  -->
|   ImageNameR1 = Iodine heptafluoride
|   OtherNames = 
| Section1 = {{Chembox Identifiers
|   CASNo = 16921-96-3
  }}
| Section2 = {{Chembox Properties
|   Formula = IF<sub>7</sub>
|   MolarMass = 259.89 g mol<sup>−1</sup>
|   Density = 2.7 g cm<sup>−3</sup> (solid)
|   Solvent = 
|   SolubleOther = 
|   MeltingPt = 4.5°C (三重点)
|   BoilingPt = 4.8°C (1 atmで昇華)}}
}}
'''七フッ化ヨウ素'''（ななフッかヨウそ、Iodine heptafluoride）または'''フッ化ヨウ素(VII)'''(Iodine(VII) fluoride)は、[[化学式]]がIF<sub>7</sub>の[[無機化合物]]である<ref>Macintyre, J. E. (Ed.).  (1992).  ''Dictionary of Inorganic Compounds'' (Vol. 3).  London:  Chapman & Hall.</ref><ref>O'Neil, Maryadele J. (Ed.).  (2001).  ''The Merck Index'' (13th ed.).  Whitehouse Station, NJ:  Merck.</ref>。単に'''フッ化ヨウ素'''とも呼ばれる。[[VSEPR理論]]によれば[[五方両錐形]]の[[分子構造]]をとる<ref>{{cite journal
| title = On the problem of heptacoordination: vibrational spectra, structure, and fluxionality of iodine heptafluoride
| author = K. O. Christe, E. C. Curtis, D. A. Dixon
| journal = [[Industrial & Engineering Chemistry]]
| year = 1993
| volume = 115
| issue = 4
| pages = 1520–1526
| doi = 10.1021/ja00057a044
}}</ref>。分子は[[ベリー機構]]のような[[擬似回転]]を受ける<ref>{{cite journal
| title = Structure, Pseudorotation, and Vibrational Mode Coupling in IF<sub>7</sub>: An Electron Diffraction Study
| author = W. J. Adams, H. Bradford Thompson, L. S. Bartell
| journal = [[Journal of Chemical Physics]]
| year = 1970
| volume = 53
| issue = 10
| pages = 4040–4046
| doi = 10.1063/1.1673876
}}</ref>。無色の固体で融点は4.5℃であるが液体である温度範囲は狭く、沸点は4.77℃である。濃い蒸気は強いカビ臭を持つ。

== 合成 ==
90℃の[[五フッ化ヨウ素]]（液体）に[[フッ素]]を通し、蒸気を270℃まで熱することにより合成する。生成物は、フッ素と乾燥[[ヨウ化パラジウム(II)]]または[[ヨウ化カリウム]]を交互に加えることにより、[[加水分解]]によって生じるIOF<sub>5</sub>の形成を最小限に抑えることができる<ref>{{cite journal
| title = Iodine Heptafluoride
| author = W. C. Schumb, M. A. Lynch, Jr.
| journal = [[Industrial & Engineering Chemistry]]
| year = 1950
| volume = 42
| issue = 7
| pages = 1383–1386
| doi = 10.1021/ie50487a035
}}</ref><ref>{{cite journal
| title = "Das Jod-7-fluorid" (The iodine-7-fluoride)
| author = Ruff O., Keim R.
| journal = Zeitschrift für Anorganische un Allgemeine Chemie
| year = 1930
| volume = 193
| issue = 1/2
| pages = 176–186
| doi = 10.1002/zaac.19301930117
}}</ref>。

: 
: <chem>{2O2PtF6} + {2KF} + IF5 -> {2KPtF6} + {2O2} + IF7</chem>

== 危険性 ==
IF<sub>7</sub>は、[[皮膚]]や[[粘膜]]に対し大きな刺激性を持つ。

== 脚注 ==
<references />

== 外部リンク ==
* [http://webbook.nist.gov/cgi/cbook.cgi?ID=C16921963 WebBook page for IF7]
* [https://web.archive.org/web/20060116134617/http://www.npi.gov.au/database/substance-info/profiles/44.html National Pollutant Inventory - Fluoride and compounds fact sheet]
* [http://www.webelements.com/webelements/compounds/text/I/F7I1-16921963.html web elements listing]

{{ヨウ素の化合物}}
{{ハロゲン間化合物}}

{{DEFAULTSORT:ななふつかようそ}}
[[Category:フッ化物]]
[[Category:ヨウ素の化合物]]
[[Category:ハロゲン間化合物]]