Disulfur difluoride is a

halide In chemistry, a halide (rarely halogenide) is a binary chemical compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative (or more electropositive) than the halogen, to make a fluor ...

sulfur Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula ...

, with the chemical formula S₂F₂.

Structure

Disulfur difluoride will undergo intramolecular rearrangement in the presence of alkali elements' fluorides, yielding the isomer S=SF₂: ::FS-SF -> \atop \ce\underset

Synthesis

Silver(II) fluoride Silver(II) fluoride is a chemical compound with the formula AgF2. It is a rare example of a silver(II) compound. Silver usually exists in its +1 oxidation state. It is used as a fluorinating agent. Preparation AgF2 can be synthesized by fluori ...

can fluorinate sulfur in a strictly dry container, and the reaction produces FS-SF: :: + \underset -> \atop \ce + 8 AgF S=SF₂ can be synthesized with the reaction of potassium fluorosulfite and

disulfur dichloride Disulfur dichloride is the inorganic compound of sulfur and chlorine with the Chemical formula, formula S2Cl2. Some alternative names for this compound are ''sulfur monochloride'' (the name implied by its empirical formula, SCl), ''disulphur dich ...

: ::2 KSO2F + S2Cl2 -> S=SF2 + 2KCl + 2 SO2

Reactions

* Decomposing to

sulfur tetrafluoride Sulfur tetrafluoride is the chemical compound with the formula S F4. It is a colorless corrosive gas that releases dangerous HF upon exposure to water or moisture. Despite these unwelcome characteristics, this compound is a useful reagent for t ...

and

when heated: ::2S2F2 -> \atop \ce \underset + 3S * Treated with water: ::2S2F2 + 2H2O -> SO2 + 3S + 4HF * Reacting with

sulfuric acid Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formu ...

: :: + \underset -> \atop \ce + + 2H2O * Reacting with

sodium hydroxide Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations and hydroxide anions . Sodium hydroxide is a highly caustic base and alkali ...

: ::2S2F2 + 6NaOH -> Na2SO3 + 3S + 4NaF + 3H2O * Reacting with oxygen at high pressure, using

nitrogen dioxide Nitrogen dioxide is a chemical compound with the formula . It is one of several nitrogen oxides. is an intermediate in the industrial synthesis of nitric acid, millions of tons of which are produced each year for use primarily in the producti ...

as the

catalyst Catalysis () is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recyc ...

: :: + 5O2 -> \atop \overset\ce + 3SO3 * Condensing with

sulfur difluoride Sulfur difluoride is an inorganic compound with the chemical formula SF2. It can be generated by the reaction of sulfur dichloride and potassium fluoride or mercury(II) fluoride at low pressures: :SCl2 + 2 KF → SF2 + 2 KCl :SCl2 + HgF2 → SF2 + ...

at low temperatures to yield 1,3-Difluoro-trisulfane-1,1-difluoride. ::SSF₂ + SF₂ → FSSSF₃

References

{{reflist Disulfides Nonmetal halides Sulfur fluorides