Thiothionyl fluoride

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Thiothionylfluoride-2D-dimensions.png
Names
IUPAC name
difluoro(sulfanylidene)-λ4-sulfane
Identifiers
  • 16860-99-4 checkY
3D model (JSmol)
ChemSpider
  • InChI=1S/F2S2/c1-4(2)3
    Key: KBYVSSUWTLBZTB-UHFFFAOYSA-N
  • FS(=S)F
Properties
F2S2
Molar mass 102.12 g·mol−1
Appearance colorless gas
Melting point −164.6 °C (−264.3 °F; 108.5 K)
Boiling point −10.6 °C (12.9 °F; 262.5 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Thiothionyl fluoride is a chemical compound of fluorine and sulfur and an isomer of disulfur difluoride.

Preparation[]

Thiothionyl fluoride can be obtained from the reaction between disulfur dichloride with potassium fluoride at about 150 °C or with mercury(II) fluoride at 20 °C.[1][2]

S2Cl2 + 2 KF → SSF2 + 2 KCl

Another possible preparation is by the reaction of nitrogen trifluoride with sulfur.[1]

NF3 + 3 S → SSF2 + NSF

It also forms from disulfur difluoride when in contact with alkali metal fluorides.[3]

Properties[]

Thiothionyl fluoride is a colorless gas.[2] At high temperatures and pressures, it decomposes into sulfur tetrafluoride and sulfur.[2]

2 SSF2 → SF4 + 3 S

With hydrogen fluoride, it forms sulfur tetrafluoride and hydrogen sulfide.[4]

SSF2 + 2 HF → SF4, + H2S

References[]

  1. ^ a b Brauer, Georg; Baudler, Marianne (1975). Handbuch der Präparativen Anorganischen Chemie. Band I. (3rd ed.). Stuttgart: Ferdinand Enke. p. 182. ISBN 3-432-02328-6.
  2. ^ a b c Holleman, A. F.; Wiberg, E.; Wiberg, N. (1995). Lehrbuch der Anorganischen Chemie (101st ed.). Berlin: Walter de Gruyter. p. 379. ISBN 3-11-012641-9.
  3. ^ Steudel, Ralf (2008). Chemie der Nichtmetalle: Von Struktur und Bindung zur Anwendung. Walter de Gruyter. p. 475. ISBN 311021128-9.
  4. ^ Kolditz, Lothar (1983). Anorganische Chemie. Berlin: Deutscher Verlag der Wissenchaften. p. 468.
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