查看“︁二氟化硫”︁的源代码

{{Chembox
| ImageFileL1 = Sulfur-difluoride-2D-dimensions.png
| ImageSizeL1 = 125px
| ImageFileR1 = Sulfur-difluoride-3D-balls.png
| ImageSizeR1 = 125px
| ImageFile2 = Sulfur-difluoride-3D-vdW.png
| ImageSize2 = 125px
| IUPACName = sulfoxylic difluoride
| OtherNames = 
| Section1 = {{Chembox Identifiers
|  CASNo = 13814-25-0
|  CASNo_Ref = {{cascite|correct|CAS}}
|  PubChem = 139605
|  ChemSpiderID = 123122
|  SMILES = FSF
|  InChI = InChI=1S/F2S/c1-3-2
  }}
| Section2 = {{Chembox Properties
|  Formula = SF<sub>2</sub>
|  MolarMass = 70.062
|  Appearance = 
|  Density = 
|  MeltingPt = 
|  BoilingPt = 
|  Solubility =
  }}
| Section3 = {{Chembox Hazards
|  MainHazards = 
|  FlashPt = 
|  Autoignition =
  }}
}}
'''二氟化硫'''是一种[[硫]]的卤化物，化学式为SF<sub>2</sub>。它可由[[二氯化硫]]与[[氟化钾]]或[[氟化汞]]在低压在反应制得<ref>{{cite book|title=《无机化学丛书》第五卷：氧、硫、硒分族|pages=P179|author=张青莲|isbn=7-03-002238-6|location=北京|publisher=科学出版社}}</ref>：

:<math>\rm \ SCl_2 + 2KF \xrightarrow{423K} SF_2 + 2KCl</math>
:<math>\rm \ SCl_2 + HgF_2 \xrightarrow{423K} SF_2 + HgCl_2</math>

二氟化硫分子中[[键角]]为98°，[[键长]]为159pm<ref>{{cite journal|doi=10.1126/science.164.3882.950|title=Microwave Spectrum and Structure of Sulfur Difluoride|year=1969|last1=Johnson|first1=D. R.|last2=Powell|first2=F. X.|journal=Science|volume=164|issue=3882|pages=950–1|pmid=17775599}}</ref>。这种化合物十分不稳定，會二聚成為FSSF<sub>3</sub>。它的不對稱同分異構體S<sub>2</sub>F<sub>4</sub>被認為是透過將SF<sub>2</sub>插入到另一個SF<sub>2</sub>分子的S-F鍵產生的<ref>{{Greenwood&Earnshaw}}</ref>。

它也可以由[[二氟化氧]]和[[硫化氫]]反應生成：{{cn}}

:<math>\rm \ OF_2 + H_2S \xrightarrow{} SF_2 + H_2O</math>

== 参考资料 ==
{{reflist}}

{{硫化合物}}
{{无机化合物小作品}}

[[Category:二价硫化合物]]
[[Category:氟化物]]
[[Category:硫的氟化物]]