Disulfur difluoride is an inorganic compound with the chemical formula . It is a halide of sulfur.
Structure Disulfur difluoride has a chain structure . The angle between the and planes is 87.9°, while the angles of and are equivalent, and are equal to 108.3°. Both bonds are equivalent and their length is 163.5 pm, while the length of the bond is 189 pm. This structure is referred to as gauche, and is similar to .
There is a branched isomer of disulfur difluoride, thiothionyl fluoride, with the structure .
Synthesis Silver(II) fluoride can fluorinate sulfur in a strictly dry container at , and the reaction produces :
Reactions Disulfur difluoride undergoes intramolecular rearrangement in the presence of fluorides of alkali metals, yielding the isomer S=SF2:
Decomposing to sulfur tetrafluoride and sulfur when heated to 180 °C:
Hydrolysis:
Reacting with sulfuric acid at 80 °C:
Reacting with sodium hydroxide:
Reacting with oxygen at high pressure, using nitrogen dioxide as a catalyst: Справочник химика / Редкол.: Никольский Б.П. и др.. — 3-е изд., испр. — Л.: Химия, 1971. — Т. 2. — 1168 с. Химическая энциклопедия / Редкол.: Кнунянц И.Л. и др.. — М.: Советская энциклопедия, 1995. — Т. 4. — 639 с. — Лидин Р.А. и др. Химические свойства неорганических веществ: Учеб. пособие для вузов. — 3-е изд., испр. — М.: Химия, 2000. — 480 с. —
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