Neha Patil (Editor)

Sulfur difluoride

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Molar mass
  
70.062 g/mol

ChemSpider ID
  
123122

Pubchem
  
139605

Sulfur difluoride httpsuploadwikimediaorgwikipediacommons77

Sulfur difluoride is an inorganic compound with the chemical formula SF2. It can be generated by the reaction of sulfur dichloride and potassium fluoride or mercury(II) fluoride at low pressures:

SCl2 + 2 KF → SF2 + 2 KCl SCl2 + HgF2 → SF2 + HgCl2

The F−S−F bond angle is 98°, and the length of S−F bond is 159 pm. The compound is highly unstable, decomposing to FSSF3. This unsymmetrical isomer of S2F4 is proposed to arise via insertion of SF2 into the S−F bond of a second molecule SF2:

It can also be formed from oxygen difluoride and hydrogen sulfide:

OF2 + H2S → SF2 + H2O

References

Sulfur difluoride Wikipedia
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