Disulfur decafluoride

Nonmeta.ls, Sulfur reacts with fluorine to yield the remarkably stable sulfur hexafluoride, SF. Operating conditions must be controlled because a mixture of the lower fluorides such as disulfur difluoride [13709-35-8] 2 2 disulfur decafluoride [5714-22-7] 2 10 sulfur tetrafluoride [7783-60-0] SF4, may also be formed. When this reaction is carried out between 310 and 340°C, SF is primarily obtained and essentially no SF and only trace amounts of lower fluorides. Below 300°C, and preferably at ca 275°C, SF is the primary product. At 450—500°C, a mixture comprising ca 50% SF and the lower sulfur fluorides is formed (see Fluorine compounds, inorganic-sulfur). 

Disulfur Decafluoride. Disulfur decafluoride [5714-22-7] 2 10 extremely toxic, colorless, volatile Hquid (114). Electron diffraction... 

Disulfur decafluoride does not react rapidly with water, mercury, copper, or platinum at ambient temperatures. There is evidence that it slowly decomposes on various surfaces in the presence of water when stored in the vapor state (118). It is decomposed by molten KOH to give a mixture of potassium compounds of sulfur and fluorine. The gas reacts vigorously with many other metals and siUca at red heat (114). At ca 156°C it combines with CI2 or Br2 to form SF Cl or SF Br (119,120). At ca 200°C, S2F2Q is almost completely thermally decomposed into the hexa- and tetrafluoride (121). 

Disulfur decafluoride, S2F10, is obtained as a byproduct of the direct fluorination of sulfur to SFg but is somewhat tedious to separate and is more conveniently made by the photolytic reduction of SCIF5 (prepared as above) ... 

Disulfur decafluoride, S2F10, can be prepared by the photochemical reaction of SF5C1 with H2 ... 

Disulfur decafluoride is best obtained by the photochemical reaction... 

Practice Problem 6.4 Write formulas for (a) disulfur decafluoride and (b) iodine trioxide. ... 

Photolytically, reduction of SF5CI with H2 gives the largest known binary sulfur fluoride, disulfur decafluoride. It is also a trace by-product of the industrial preparation of SFe, but it is not isolated and is destroyed by heating to 400 °C. Disulfur decafluoride is a liquid at room temperature that will completely decompose at 200 °C to SF4 and SFe. It is intermediate in properties when compared to SF4 and SFe. It is not hydrolyzed by water alone, but it is slowly attacked by aqueous NaOH. Disulfur decafluoride can be stored at room temperature as a liquid for years. Like SF4, it is extremely... 

The first reported preparations of sulfur chloride penta-fluoride involved the fluorination of sulfur(II) chloride, the chlorination of disulfur decafluoride, and the electrolysis of sulfur(II) chloride-hydrogen fluoride mixtures. Newer methods utilize the reaction between chlorine monofluoride and sulfur(IV) fluoride or the reaction between chlorine, cesium fluoride, and sulfur(IV) fluoride. The directions described here for the reaction between chlorine monofluoride and sulfur(IV) fluoride are for the preparation of substantial quantities if only a 1- or 2-g. sample is required, the modifications described in the last paragraph of the Procedure section may be employed or a batch pro-... 

Caution. The reagents and products are extremely toxic, particularly sulfur chloride pentafluoride and disulfur decafluoride. 

The reaction is strongly exothermic. Lower sulfur fluorides are formed as byproducts together with the extremely poisonous disulfur decafluoride. Most of the lower sulfur fluorides are easily hydrolyzable, but sulfur decafluoride can only be decomposed by pyrolysis ... 

Disulfur decafluoride, S2F10, is formed as a by-product, but is more conveniently... 

Agent Index A045 Class Index C14 Disulfur Decafluoride No U.S. Military Designation CAS 5714-22-7 S2F10 Colorless liquid or gas with an odor of sulfur dioxide. TWA 0.025 ppm IDLH 1 ppm FC-50 LD50 — Routes Inhalation Skin Absorption (liq) Local Skin/Eye Impacts Evacuation Distances None established MW 254.1 MP -134°F BP 84°F VP 561 mmHg Vlt 740,000 ppm SG 2.08 RVD 8.8 RPr 0.008 Sol Insoluble Fl.P None IP —... 

Write formulas that correspond to the following names (a) disulfur decafluoride, (b) nitrogen trifluoride, (c) propane, and (d) hydrogen chloride. 

Disulfur decafluoride is intermediate in reactivity between SF4 and SFg. It disproportionates at 150°C to these monosulfur fluorides. Write a balanced equation for this reaction, and give the oxidation state of S in each compound. 

Re3As7 TRIRHENIUM HEPTAARSENIDE 1382 S2F10[g] DISULFUR DECAFLUORIDE (GAS) 1424... 

Disulfur decafluoride can be prepared in a similar fashion to SFe, provided the reaction conditions are adjusted and carefully controlled, although a more convenient laboratory scale reaction is the photochemical reaction of SF5CI with H2 (equation 42). ... 

Synonyms/Trade Names Disulfur decafluoride, Sulfur decafluoride... 

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