Sulfur tetrachloride hexafluoride

Reactions with excess chlorine or fluorine yield sulfur tetrachloride, SCL, or hexafluoride, SFe. These reactions occur under cold conditions. 

Sulfur, unlike oxygen, has the capacity to expand its valence shell beyond the normal octet of electrons to form hypervalent compounds such as sulfur tetrafluoride (SF4) with 10 electrons in the outermost shell and sulfur hexafluoride (SF6) containing 12 electrons in the valence shell.63,7 The chemistry of hypervalent sulfur started in 1873 with the discovery of the unstable compound sulfur tetrachloride (SCI4). The existence of hypervalent sulfur compounds is an important feature of the chemistry of sulfur and the precise nature of the bonding in these molecules has remained a puzzling problem. 

Depending on the ring substituent, trifluoromethoxyben2enes can be made by the sequential chlorination—fluorination of anisole(s) (351—354). A one-step process with commercial potential is the BF (or SbF2)-cataly2ed reaction of phenol with carbon tetrachloride/hydrogen fluoride (355). Aryl trifluoromethyl ethers, which may not be accessible by the above routes,may be made by fluorination of aryl fluoroformates or aryl chlorothioformates with sulfur tetrafluoride (348) or molybdenum hexafluoride (356). 

Ans. (a) Carbon monoxide, (b) sulfur dioxide, (c) sulfur trioxidc, (d) carbon tetrachloride, (e) phosphorus pentachloride, and (/) sulfur hexafluoride. 

It explodes on contact with carbon tetrachloride or sulfur hexafluoride, and contact with chloroform causes incandescence. Disilane ignites spontaneously in air, even when pure, and ingress of air or oxygen into a volume of disilane causes explosion. 

Silicon dibromide sulfide, 0281 Silicon tetralluoride, 4352 Sulfinyl bromide, 0274 Sulfinyl chloride, 4096 Sulfinyl fluoride, 4318 Sulfonyl chloride, 4099 Sulfur dibromide, 0280 Sulfur dichloride, 4113 Sulfur hexafluoride, 4374 Sulfur tetralluoride, 4350 Tellurium tetrachloride, 4175... 

Liquid perchloryl fluoride is a typical nonpolar solvent. Most inorganic and organic salts are insoluble in it. Conversely, most covalent, essentially nonpolar substances, boiling within about 50°G of perchloryl fluoride, are completely miscible, e.g., chlorine, boron trifluoride, sulfur hexafluoride, silicon tetrafluoride, phosgene, nitrous oxide, chlorine trifluoride, chlorofluorocarbons, silicon tetrachloride, sulfuryl chloride, dinitrogen tetroxide, and thionyl chloride 106). 

Silicon, higher chlorides of, 42 Silicon tetrabromide, 38, 40 Silicon tetrachloride, 44 Silicopropane, octachloro, 44 Silicotungstic acid, 129 analysis, 131 ether complex, 131 Silver, metallic, 4 Silver chloride, reduction of, 3 Silver cyanamide, 98 Silver residues, purification of, 2 Sodium amalgam, 10 Sodium amide, 74 Sodium azide, purification of, 79 Sodium azidodithiocarbonate, 82 Sodium butoxide, 88 Sodium hypochlorite (solution), 90 Sodium iodate, 168 Sodium metaperiodate, 170 Sodium paraperiodate, chlorine method, 169 persulfate method, 170 Strontium amalgam, 11 Sulfur hexafluoride, 121 Sulfuryl chloride, 114... 

Silicon dibromide sulfide, 0280 Silicon tetrafluoride, 4346 Sulfinyl bromide, 0273 Sulfinyl chloride, 4090 Sulfinyl fluoride, 4312 Sulfonyl chloride, 4093 Sulfur dibromide, 0279 Sulfur dichloride, 4107 Sulfur hexafluoride, 4368 Sulfur tetrafluoride, 4344 Tellurium tetrachloride, 4169... 

Carbon disulfide, sulfur dioxide, sulfur hexafluoride Hexane, toluene, methylene chloride, chloroform, carbon tetrachloride, trichlorofluoromethane Formic acid... 

The class was comprised of carbon dioxide with aromatics ketones and carbon tetrachloride as solutes and aliphatics (propane, hexane, dimethyl butane), sulfur hexafluoride, and chlorotrifluoromethane as solvents with aromatics as solutes. In addition, sulfur hexafluoride combined with carbon tetrachloride, and chlorotrifluoromethane combined with 2-propanone were included in that class. In all cases, X = (1 + Vc /Vc r )V l + Ma/Mb) was in the range of 1 to 10. 

Oxidizer, Poison, Corrosive SAFETY PROFILE Poisonous and corrosive. Very reactive, a powerful oxidizer. Explosive or violent reaction with organic materials, water, acetone, ammonium halides, antimony, antimony trichloride oxide, arsenic, benzene, boron, bromine, carbon, carbon monoxide, carbon tetrachloride, carbon tetraiodide, chloromethane, cobalt, ether, halogens, iodine, powdered molybdenum, niobium, 2-pentanone, phosphoms, potassium hexachloroplatinate, pyridine, silicon, silicone grease, sulfur, tantalum, tin dichloride, titanium, toluene, vanadium, uranium, uranium hexafluoride. 

In case that all three principal moments of inertia of a molecule are equal, the molecule is called a spherical-top molecule (examples methane, carbon tetrachloride, sulfur hexafluoride). The energy levels in this case assume a particularly simple form (Problem 36-2). 

Phosphorus pentafluoride Polarine oil Selenium mustard Silicon tetrafluoride Strontium chlorate Strontium permanganate Sulfur chloropentafluoride Sulfur dichloride Sulfur hexafluoride Sulfur monochloride Titanium tetrachloride Thiocarhonyl dichloride Thionyl fluoride Thioptiosgene Triethyl aluminum Trifluoromethyl iodide Triisohutylaluminum Trimethylaluminum Vanadium tetrachloride Vincennite Vinyl bromide Vinylmagnesium bromide Xenon difluoride Zinc arsenide... 

The heavier elements of the group, S, Se and Te all form tetralluorides, EF4 and hexafluorides, EF6- If the central atom in these compounds form Lewis electron pair bonds to all the ligating fluorine atoms, it must accommodate five or six electron pairs in the valence shell, and we refer to the atoms as hypervalent. Sulfur forms no further homoleptic hypervalent derivatives. Selenium forms a solid tetrachloride, but as mentioned in the last paragraph, it decomposes on evaporation. Tellurium forms a solid tetrachloride, which may be evaporated without decomposition, as well as tetraphenyl-, tetramethyl- and hexamethyl- derivatives. 

The uses of these prefixes are illustrated by the names of several oxygen compounds (oxides) in Table 4.2. Other examples of compounds in which prefixes are used for naming are SiCl4, silicon tetrachloride SijFg, disilicon hexafluoride PCI5, phosphorus pentachloride and SClj, sulfur dichloride. 

Name the following compounds CO, CO2, NO2, N2O3, CCI4, SFe. Did you get carbon monoxide, carbon dioxide, nitrogen dioxide, dinitrogen trioxide, carbon tetrachloride, and sulfur hexafluoride ... 

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