查看“︁六氟化锇”︁的源代码

{{Chembox
| ImageFile =Osmium(VI)-fluoride.svg
|  ImageSize =
|  ImageAlt =
| IUPACName = osmium(VI) fluoride
| OtherNames = osmium hexafluoride
| Section1 = {{Chembox Identifiers
| CASNo = 13768-60-0
| CASNo_Ref = {{cascite|correct|CAS}}
| InChI = 1/6FH.2Os/h6*1H;;/q;;;;;;+6/p-6
| PubChem = 123327
| SMILES = F[Os](F)(F)(F)(F)F
}}
| Section2 = {{Chembox Properties
|  Formula = OsF<sub>6</sub>
|  MolarMass = 304.22
|  Appearance = 黄色晶状固体<ref name="CRC_HANDBOOK_OsF6"/>
|  Density = 5.09g/mL<ref name="D_BLOCK_XF6"/>
|  MeltingPt = 33.4 °C<ref name="CRC_HANDBOOK_OsF6"/>
|  BoilingPt = 47.5 °C<ref name="CRC_HANDBOOK_OsF6"/>
|  Solubility = }}
| Section3 = {{Chembox Hazards
|  MainHazards =
|  FlashPt =
|  Autoignition = }}
}}
'''六氟化锇'''是[[锇]]元素与[[氟]]元素形成的一种[[无机化合物]]，[[化学式]]为{{化學式|锇|氟|6}}，它也是已知的17种二元[[六氟化物]]之一。

== 制备 ==
六氟化锇可由金属锇与过量的氟气在300&nbsp;°C下直接化合制得：<ref>{{cite journal|coauthors=Malm, John G.|journal=Journal of the American Chemical Society|date=1958-09-05|volume=80|issue=17|pages=4466–4468|doi=10.1021/ja01550a007|last=Weinstock|first=Bernard}}</ref>

:<math>\mathrm{Os + 3\ F_2 \xrightarrow{300^oC} OsF_6}</math>

== 性质 ==
六氟化锇是一种黄色晶体，熔点为33.4&nbsp;°C，沸点为47.5&nbsp;°C。<ref name="CRC_HANDBOOK_OsF6"/>在−140&nbsp;°C是测得它的固态结构为[[正交晶系|正交晶系晶体]]，空间群为''Pnma''。[[晶格常数|晶胞参数]]''a''&nbsp;=&nbsp;9.387&nbsp;[[埃格斯特朗|Å]]，''b''&nbsp;=&nbsp;8.543&nbsp;Å，而''c''&nbsp;=&nbsp;4.944&nbsp;Å。每个[[晶胞]]中有四个[[化学式单位]]的六氟化锇（这里是四个六氟化锇分子），密度则是5.09&nbsp;g·cm<sup>−3</sup>。<ref name="D_BLOCK_XF6"/>

六氟化锇分子本身（气态或液态的主要存在形式）具有[[八面体空间构型]]，点群为''[[八面体对称性|O<sub>h</sub>]]''。其中Os–F键的[[键长]]为1.827&nbsp;Å。<ref name="D_BLOCK_XF6"/>

六氟化锇部分[[水解]]生成[[四氟一氧化锇]]（OsOF<sub>4</sub>）。<ref>{{cite journal|title=Partial hydrolysis of rhenium and osmium hexafluorides. An improved synthesis and characterization of rhenium oxide tetrafluoride|journal=Inorganic Chemistry|date=1973-06-01|volume=12|issue=6|pages=1457–1458|doi=10.1021/ic50124a060|last=Paine|first=R. T.}}</ref>

== 参考文献 ==
{{reflist|refs=

<ref name="CRC_HANDBOOK_OsF6">''[[CRC Handbook of Chemistry and Physics]]'', 90th Edition, CRC Press, Boca Raton, Florida, 2009, ISBN 978-1-4200-9084-0, Section 4, ''Physical Constants of Inorganic Compounds'', p.&nbsp;4-85.</ref>

<ref name="D_BLOCK_XF6">T. Drews, J. Supeł, A. Hagenbach, K. Seppelt: "Solid State Molecular Structures of Transition Metal Hexafluorides", in: ''[[Inorganic Chemistry]]'', '''2006''', ''45&nbsp;(9)'', S.&nbsp;3782–3788; {{DOI|10.1021/ic052029f}}; PMID 16634614.</ref>

}}

== 扩展阅读 ==
* ''[[Gmelins Handbuch der anorganischen Chemie]]'', System Nr.&nbsp;53, Osmium, Supplement Volume 1, pp. 111–114.

== 外部链接 ==
* [http://www.webelements.com/compounds/osmium/osmium_hexafluoride.html Osmium hexafluoride at webelements.com] {{Wayback|url=http://www.webelements.com/compounds/osmium/osmium_hexafluoride.html |date=20201124011446 }}.

[[Category:六价锇化合物]]
[[Category:六氟化物]]
[[Category:八面体形分子]]
[[Category:铂系元素卤化物]]

{{六氟化物}}
{{锇化合物}}