Disulfur difluoride

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Disulfur difluoride
IUPAC name

fluorosulfanyl thiohypofluorite

Identifiers
CAS number 13709-35-8
PubChem 123323
ChemSpider 109926
Jmol-3D images Image 1
Properties
Molecular formula S2F2
Molar mass 102.127 g/mol
Related compounds
Related compounds O
2F
2
S
2Cl
2
SF
2
Except where noted otherwise, 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 with the existence of alkali elements' fluorides, obtaining 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}+8AgF_{2}{\xrightarrow {398K}}4S_{2}F_{2}+8AgF}}

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

{\rm {\ 2KSO_{2}F+S_{2}Cl_{2}\rightarrow S=SF_{2}+2KCl+2SO_{2}}}[3]

Reactions

{\mathrm {2S_{2}F_{2}\ {\xrightarrow {180^{o}C}}\ SF_{4}+3S}}
  • Treated with water:
{\mathrm {2S_{2}F_{2}+2H_{2}O\ {\xrightarrow {}}\ SO_{2}+3S+4HF}}
{\mathrm {S_{2}F_{2}+3H_{2}SO_{4}\ {\xrightarrow {80^{o}C}}\ 5SO_{2}+2HF+2H_{2}O}}
{\mathrm {2S_{2}F_{2}+6NaOH\ {\xrightarrow {}}\ Na_{2}SO_{3}+3S+4NaF+3H_{2}O}}
{\mathrm {2S_{2}F_{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 5-82270-092-4 (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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