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| | I’m Mervin from Wookey Hole studying Africana Studies. I did my schooling, secured 82% and hope to find someone with same interests in Bboying.<br><br>My weblog ... [https://GentryXj5CcEyP.jux.com Jewellery shops] |
| | ImageFile = Disulfur-difluoride-2D-dimensions.png
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| | ImageSize = 250px
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| | ImageFileL2 = Disulfur-difluoride-3D-balls.png
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| | ImageSizeL2 = 125px
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| | ImageFileR2 = Disulfur-difluoride-3D-vdW.png
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| | ImageSizeR2 = 125px
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| | IUPACName = fluorosulfanyl thiohypofluorite
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| | OtherNames =
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| | Section1 = {{Chembox Identifiers
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| | CASNo = 13709-35-8
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| | PubChem = 123323
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| | ChemSpiderID = 109926
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| | SMILES = FSSF
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| | InChI = 1S/F2S2/c1-3-4-2
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| }}
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| | Section2 = {{Chembox Properties
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| | Formula = S<sub>2</sub>F<sub>2</sub>
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| | MolarMass = 102.127 g/mol
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| | Appearance =
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| | Density =
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| | Section3 = {{Chembox Hazards
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| | MainHazards =
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| | FlashPt =
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| | Section8 =
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| {{Chembox Related
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| | OtherCpds = [[Dioxygen difluoride|{{chem|O|2|F|2}}]]<br><!--
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| -->[[Disulfur dichloride|{{chem|S|2|Cl|2}}]]<br><!--
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| -->[[Sulfur difluoride|{{chem|SF|2}}]]
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| '''Disulfur difluoride''' is a [[halide]] of [[sulfur]], with the chemical formula S<sub>2</sub>F<sub>2</sub>.
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| == Structure ==
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| Disulfur difluoride will undergo intramolecular rearrangement with the existence of alkali elements' fluorides, obtaining the isomer S=SF<sub>2</sub>:<ref>{{cite journal|doi=10.1016/0022-2852(86)90134-7|title=The microwave spectrum of the pyramidal isomer of disulfur difluoride: S=SF2|year=1986|last1=Davis|first1=R.Wellington|journal=Journal of Molecular Spectroscopy|volume=116|issue=2|pages=371}}</ref>
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| :<math>\rm \ FS-SF \xrightarrow{KF} S=SF_2</math>
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| == Synthesis ==
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| [[Silver(II) fluoride]] can fluorinate sulfur in a strictly dry container, and the reaction produces FS-SF:<ref>{{cite journal|doi=10.1016/0022-2852(91)90109-N|title=The microwave spectrum of the chain isomer of disulfur difluoride: FS-SF|year=1991|last1=Davis|first1=R.Wellington|last2=Firth|first2=Steven|journal=Journal of Molecular Spectroscopy|volume=145|issue=2|pages=225}}</ref>
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| :<math>\rm \ S_8 + 8 AgF_2 \xrightarrow{398K} 4 S_2F_2 + 8 AgF</math>
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| S=SF<sub>2</sub> can be synthesized with the reaction of [[potassium fluorosulfite]] and [[disulfur dichloride]]:
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| :<math>\rm \ 2 KSO_2F + S_2Cl_2 \rightarrow S=SF_2 + 2 KCl + 2 SO_2</math><ref>{{cite book|title=《无机化学丛书》第五卷：氧、硫、硒分族|page=179|author=张青莲|isbn=7-03-002238-6|location=Beijing|publisher=Science Press|language=Chinese}}</ref>
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| == Reactions ==
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| * Decomposing to [[sulfur tetrafluoride]] and [[sulfur]] when heated:
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| :<math>\mathrm{2S_2F_2 \ \xrightarrow{180^oC}\ SF_4 + 3S }</math>
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| * Treated with water:
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| :<math>\mathrm{2S_2F_2 + 2H_2O \ \xrightarrow{}\ SO_2 + 3S + 4HF }</math>
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| * Reacting with [[sulfuric acid]]:
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| :<math>\mathrm{S_2F_2 + 3H_2SO_4 \ \xrightarrow{80^oC}\ 5SO_2 + 2HF + 2H_2O }</math>
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| * Reacting with [[sodium hydroxide]]:
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| :<math>\mathrm{2S_2F_2 + 6NaOH \ \xrightarrow{}\ Na_2SO_3 + 3S + 4NaF + 3H_2O }</math>
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| * Reacting with oxygen at high pressure, using [[nitrogen dioxide]] as the [[catalyst]]:
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| :<math>\mathrm{2S_2F_2 + 5O_2 \ \xrightarrow{NO_2}\ SOF_4 + 3SO_3 }</math><ref>Справочник химика / Редкол.: Никольский Б.П. и др.. — 3-е изд., испр. — Л.: Химия, 1971. — Т. 2. — 1168 с. {{ru icon}}</ref><ref>Химическая энциклопедия / Редкол.: Кнунянц И.Л. и др.. — М.: Советская энциклопедия, 1995. — Т. 4. — 639 с. — ISBN 5-82270-092-4 {{ru icon}}</ref><ref>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 {{ru icon}}</ref>
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| == References ==
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| {{reflist}}
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| {{Inorganic-compound-stub}}
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| [[Category:Sulfur compounds]]
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| [[Category:Fluorides]]
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| [[Category:Nonmetal halides]]
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I’m Mervin from Wookey Hole studying Africana Studies. I did my schooling, secured 82% and hope to find someone with same interests in Bboying.
My weblog ... Jewellery shops