Disulfur difluoride

Disulfur difluoride
Names
IUPAC name
fluorosulfanyl thiohypofluorite
Identifiers
13709-35-8
ChemSpider 109926
Jmol interactive 3D Image
PubChem 123323
Properties
S2F2
Molar mass 102.127 g/mol
Related compounds
Related compounds
O
2
F
2

S
2
Cl
2

SF
2
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Disulfur difluoride is a halide of sulfur, with the chemical formula S2F2.

Structure

Disulfur difluoride will undergo intramolecular rearrangement in the presence of alkali elements' fluorides, yielding the isomer S=SF2:[1]

\rm \ FS-SF \xrightarrow{KF} S=SF_2

Synthesis

Silver(II) fluoride can fluorinate sulfur in a strictly dry container, and the reaction produces FS-SF:[2]

\rm \ S_8 + 8 AgF_2 \xrightarrow{398K} 4 S_2F_2 + 8 AgF

S=SF2 can be synthesized with the reaction of potassium fluorosulfite and disulfur dichloride:

\rm \ 2 KSO_2F + S_2Cl_2 \rightarrow S=SF_2 + 2 KCl + 2 SO_2[3]

Reactions

\mathrm{2S_2F_2 \ \xrightarrow{180^oC}\ SF_4 + 3S }
\mathrm{2S_2F_2 + 2H_2O \ \xrightarrow{}\ SO_2 + 3S + 4HF }
\mathrm{S_2F_2 + 3H_2SO_4 \ \xrightarrow{80^oC}\ 5SO_2 + 2HF + 2H_2O }
\mathrm{2S_2F_2 + 6NaOH \ \xrightarrow{}\ Na_2SO_3 + 3S + 4NaF + 3H_2O }
\mathrm{2S_2F_2 + 5O_2 \ \xrightarrow{NO_2}\ SOF_4 + 3SO_3 }[4][5][6]

References

  1. Davis, R.Wellington (1986). "The microwave spectrum of the pyramidal isomer of disulfur difluoride: S=SF2". Journal of Molecular Spectroscopy 116 (2): 371. doi:10.1016/0022-2852(86)90134-7.
  2. Davis, R.Wellington; Firth, Steven (1991). "The microwave spectrum of the chain isomer of disulfur difluoride: FS-SF". Journal of Molecular Spectroscopy 145 (2): 225. doi:10.1016/0022-2852(91)90109-N.
  3. 张青莲. 《无机化学丛书》第五卷:氧、硫、硒分族 (in Chinese). Beijing: Science Press. p. 179. ISBN 7-03-002238-6.
  4. Справочник химика / Редкол.: Никольский Б.П. и др.. — 3-е изд., испр. — Л.: Химия, 1971. — Т. 2. — 1168 с. (Russian)
  5. Химическая энциклопедия / Редкол.: Кнунянц И.Л. и др.. — М.: Советская энциклопедия, 1995. — Т. 4. — 639 с. — ISBN 978-5-85270-092-6 (Russian)
  6. Лидин Р.А. и др. Химические свойства неорганических веществ: Учеб. пособие для вузов. — 3-е изд., испр. — М.: Химия, 2000. — 480 с. — ISBN 5-7245-1163-0 (Russian)


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