Thiothionyl fluoride explained

Thiothionyl fluoride is a chemical compound of fluorine and sulfur, with the chemical formula . It is an isomer of disulfur difluoride (difluorodisulfane) .

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]}

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

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

can also be synthesized with the reaction of potassium fluorosulfite and disulfur dichloride:

^[4]

Properties

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

With hydrogen fluoride, it forms sulfur tetrafluoride and hydrogen sulfide.^[5]

It condenses with sulfur difluoride at low temperatures to yield 1,3-difluoro-trisulfane-1,1-difluoride.

^[6]

References

1. Book: Brauer. Georg. Handbuch der Präparativen Anorganischen Chemie. Band I.. Baudler. Marianne. Ferdinand Enke. 1975. 3-432-02328-6. 3rd. Stuttgart. 182.
2. Book: Holleman. A. F.. Lehrbuch der Anorganischen Chemie.. Wiberg. E.. Wiberg. N.. Walter de Gruyter. 1995. 3-11-012641-9. 101st. Berlin. 379.
3. Book: Steudel, Ralf. Chemie der Nichtmetalle: Von Struktur und Bindung zur Anwendung. Walter de Gruyter. 2008. 978-311021128-3. 475.
4. Book: zh:《无机化学丛书》第五卷：氧、硫、硒分族. 179. 张青莲. 978-7-03-002238-7. Beijing. Science Press. Chinese. 1991.
5. Book: Kolditz, Lothar. Anorganische Chemie. Deutscher Verlag der Wissenchaften. 1983. Berlin. 468.
6. Lösking. O.. Willner. H.. Baumgärtel. H.. Jochims. H. W.. Rühl. E.. Chalkogenfluoride in niedrigen Oxydationsstufen. X Thermochemische Daten und Photoionisations-Massenspektren von SSF2, FSSF, SF3SF und SF3SSF. Zeitschrift für anorganische und allgemeine Chemie. November 1985. 530. 11. 169–177. 10.1002/zaac.19855301120.