查看“︁二氟二氧化氙”︁的源代码

{{Chembox
| ImageFile = Xenon_difluoride_dioxide.svg
| ImageSize = 150px
| ImageFile1 = Xenon-dioxydifluoride-3D-balls.png
| ImageSize1 = 150px
| IUPACName = 
| OtherNames = 
| Section1 = {{Chembox Identifiers
|  CASNo = 13875-06-4
|  PubChem = 23236530
|  ChemSpiderID = 10329748
|  SMILES = F[Xe](F)(=O)=O
|  InChI = 1/F2O2Xe/c1-5(2,3)4
|  InChIKey = OJNSIFWVGHJJMW-UHFFFAOYAM
|  StdInChI = 1S/F2O2Xe/c1-5(2,3)4
|  StdInChIKey = OJNSIFWVGHJJMW-UHFFFAOYSA-N
  }}
| Section2 = {{Chembox Properties
|  Formula = F<sub>2</sub>O<sub>2</sub>Xe
|  MolarMass = 201.289
|  Appearance = 无色晶体<ref name=":0">{{cite book | last=Holloway | first=John H. | last2=Laycock | first2=David | title=Advances in Inorganic Chemistry | chapter=Preparations and Reactions of Inorganic Main-Group Oxide Fluorides | publisher=Elsevier | year=1983 | issn=0898-8838 | doi=10.1016/s0898-8838(08)60107-5}}</ref>
|  Density = 
|  MeltingPt = 30.8&nbsp;°C（87.4&nbsp;°F，304&nbsp;K）<ref name="Claassen" />
|  BoilingPt = 
|  Solubility =
  }}
| Section3       = {{Chembox Structure
| CrystalStruct = 正交晶系<ref name="Willett">{{Cite journal |last=Willett |first=R. D. |last2=LaBonville |first2=P. |last3=Ferraro |first3=J. R. |date=1975-08-15 |title=Normal coordinate treatment of XeO 2 F 2 |url=http://aip.scitation.org/doi/10.1063/1.431510 |journal=The Journal of Chemical Physics |language=en |volume=63 |issue=4 |pages=1474–1478 |doi=10.1063/1.431510 |issn=0021-9606 |access-date=2022-08-15 |archive-date=2022-04-02 |archive-url=https://web.archive.org/web/20220402155009/http://aip.scitation.org/doi/10.1063/1.431510 |dead-url=yes }}</ref>
| Coordination = 
| MolShape = 三角双锥<ref name="Willett" />
  }}
}}
'''二氟二氧化氙'''是[[氙]]的[[氟氧化物]]之一，化学式 XeO<sub>2</sub>F<sub>2</sub><ref name="Willett" /><ref name="Claassen" />。室温下的二氟二氧化氙是[[亚稳定]]的固体，会缓慢分解成[[二氟化氙]]，原因不明。<ref name="Claassen">{{Cite journal |last=Claassen |first=Howard H. |last2=Gasner |first2=Earl L. |last3=Kim |first3=Hyunyong |last4=Huston |first4=J. L. |date=July 1968 |title=Vibrational Spectra and Structure of XeO 2 F 2 |url=http://aip.scitation.org/doi/10.1063/1.1669818 |journal=The Journal of Chemical Physics |language=en |volume=49 |issue=1 |pages=253–257 |doi=10.1063/1.1669818 |issn=0021-9606 |access-date=2022-08-15 |archive-date=2020-12-10 |archive-url=https://web.archive.org/web/20201210160429/http://aip.scitation.org/doi/10.1063/1.1669818 |dead-url=yes }}</ref>

二氟二氧化氙是由Huston于1967年首次合成的。<ref name=":2">{{cite journal | last=Huston | first=John L. | title=Xenon dioxide difluoride: isolation and some properties | journal=The Journal of Physical Chemistry | publisher=American Chemical Society (ACS) | volume=71 | issue=10 | year=1967 | issn=0022-3654 | doi=10.1021/j100869a035 | pages=3339–3341}}</ref>

==制备==
二氟二氧化氙可以由[[三氧化氙]]和[[四氟一氧化氙]]反应而成：<ref name="Claassen" />
: <chem>XeO3 + XeOF4 -> 2XeO2F2</chem>

它还可以通过[[六氟化氙]]和[[水]]或[[硝酸钠]]的反应产生。<ref>{{cite | last=Schrobilgen | first=Gary J. | last2=Moran | first2=Matthew D. | title=Noble-Gas Compounds | publisher=John Wiley & Sons, Inc. | publication-place=Hoboken, NJ, USA | date=2003-04-18 | doi=10.1002/0471238961.0315131619030818.a01.pub2}}</ref>

它也可以由[[五氧化二氮]]和[[四氟一氧化氙]]反应而成：<ref name=":1">{{cite journal | last=Christe | first=Karl O. | last2=Wilson | first2=William W. | title=New syntheses and properties of XeO2F2, Cs+XeO2F3- and NO2+[XeO2F2.cntdot.nXeO2F2]- | journal=Inorganic Chemistry | publisher=American Chemical Society (ACS) | volume=27 | issue=21 | year=1988 | issn=0020-1669 | doi=10.1021/ic00294a019 | pages=3763–3768}}</ref>
:XeOF<sub>4</sub> + N<sub>2</sub>O<sub>5</sub> → XeO<sub>2</sub>F<sub>2</sub> + 2 [[硝酰氟|NO<sub>2</sub>F]]
注意这个反应不能加入过多的五氧化二氮，不然会产生更多硝酰氟和极易爆炸的三氧化氙。<ref name=":1"/>

==性质==
二氟二氧化氙是无色<ref name=":0"/>、[[正交晶系]]的晶体，空间群 Cmcm，晶格参数 a = 6.5 Å、b = 6.3 Å和c = 8.3 Å。这个分子是三角双锥形的，两个氟原子在垂直位置上，而氧原子和孤对电子位于水平位置上。它的Xe-O键长为1.714 Å、Xe-F键长1.899 Å、O-Xe-O键角105.7°、O-Xe-F键角91.6°、F-Xe-F键角174.7°。<ref>{{cite journal | last=Peterson | first=S. W. | last2=Willett | first2=R. D. | last3=Huston | first3=J. L. | title=Symmetry and structure of XeO2F2 by neutron diffraction | journal=The Journal of Chemical Physics | publisher=AIP Publishing | volume=59 | issue=1 | year=1973 | issn=0021-9606 | doi=10.1063/1.1679827 | pages=453–459}}</ref>

==反应==
二氟二氧化氙在潮湿空气中立即水解为[[三氧化氙]]，而且水解过程中还可以嗅出臭氧味。<ref name=":2"/>

它和[[五氟碲酸硼]]反应，生成五氟碲氧基取代的化合物：<ref>{{cite journal | last=Schumacher | first=Gerhard A. | last2=Schrobilgen | first2=Gary J. | title=Preparation of O2XeF2-x(OTeF5)x, OXeF4-y(OTeF5)y and XeF4-y(OTeF5)y (x = 0-2, y = 0-4) and study by xenon-129 and fluorine-19 NMR and Raman spectroscopy: the oxygen primary isotopic effect in the xenon-129 NMR spectra of xenon(VI) oxyfluorides (XeO2F2 and XeOF4) | journal=Inorganic Chemistry | publisher=American Chemical Society (ACS) | volume=23 | issue=19 | year=1984 | issn=0020-1669 | doi=10.1021/ic00187a005 | pages=2923–2929}}</ref>
:3 XeO<sub>2</sub>F<sub>2</sub> + 2 B(OTeF<sub>5</sub>)<sub>3</sub> → 3 XeO<sub>2</sub>(OTeF<sub>5</sub>)<sub>2</sub> + 2 BF<sub>3</sub>

它也可以和[[五氟化锑]]反应生成[XeO<sub>2</sub>F]<sup>+</sup>[Sb<sub>2</sub>F<sub>11</sub>]<sup>-</sup>，其中含有的[XeO<sub>2</sub>F]<sup>+</sup>有三角锥形结构。<ref name=":0"/>二氟二氧化氙还会和[[氟化铯]]反应，生成CsXeO<sub>2</sub>F<sub>3</sub>。<ref name=":1"/>

==参考资料==
{{reflist}}

==扩展阅读==
*无机化学丛书，第一卷

{{氙化合物}}
{{卤氧化物}}
[[Category:六价氙化合物]]
[[Category:氟氧化物]]
[[Category:缺少物质图片的化学品条目]]
[[Category:1960年代发现的物质]]