Sulfur arsenic fluorides

Such representative non-metal elements as boron, silicon, phosphorus, sulfur, arsenic, antimony, selenium and tellurium react with chlorine trifluoride at room temperature or on very slight warming to produce the corresponding fluorides. These reactions are generally vigorous and are accompanied by heat and light [96]. 

The fluorination ofacid chlorides with other reagents, e. g. arsenic fluoride, zinc fluoride, 17-219 and antimony fluoride, has been reported. Zinc fluoride reacts under mild conditions giving the desired acyl fluorides in good yield, while antimony(III) fluoride gives aromatic acyl fluorides in good yield, e. g. 2, but aliphatic systems in only moderate yield, e. g. 3.Other reagents w hich are used include mercury(II) fluoride, thallium fluoride, " alkali metal fluorosulfinates " and sulfur tetrafluoride. ... 

Phenyltetrafluorophosphorane was first obtained by the reaction of phenyldichlorophosphine with antimony(V) fluoride or a mixture of antimony(V) chloride and antimony-(III) fluoride. In another method of preparation, phenyl-tetrachlorophosphorane was fluorinated with antimony(III) fluoride. Sulfur(IV) fluoride was used to fluorinate both phenylphosphonic acid and phenylphosphonic difluoride under autogenous pressure. Finally, it was found that phenyltetrafluorophosphorane is formed upon reaction of phenyldichlorophosphine with antimony(III) fluoride, by a simultaneous redox and fluorination reaction. " The last reaction is described below. It is very general in scope and has been employed in the synthesis of a wide variety of tetrafluorophosphoranes. " It may be noted that arsenic-(III) fluoride can be employed similarly as the fluorinating agent instead of antimony(III) fluoride. ... 

Diphenyltrifluorophosphorane was first obtained by the reaction of diphenylphosphinic acid with sulfur (IV) fluoride under autogenous pressure. The present method consists in the reaction of diphenylchlorophosphine with arsenic(III) fluoride at atmospheric pressure. ... 

Hydrogen fluoride Acetic anhydride, 2-aminoethanol, ammonia, arsenic trioxide, chlorosulfonic acid, ethylenediamine, ethyleneimine, fluorine, HgO, oleum, phosphorus trioxide, propylene oxide, sodium, sulfuric acid, vinyl acetate... 

Arsenic trifluoride (arsenic(III) fluoride), AsF, can be prepared by reaction of arsenic trioxide with a mixture of sulfuric acid and calcium fluoride or even better with fluorosulfonic acid. Chlorine reacts with ice-cold arsenic trifluoride to produce a hygroscopic soHd compound, arsenic dichloride trifluoride [14933-43-8] ASCI2F35 consisting of AsQ. and AsF ions (21). Arsenic trifluoride forms a stable adduct, 2AsF2 SSO, with sulfur trioxide and reacts with nitrosyl fluoride to give nitrosonium hexafluoroarsenate(V) [18535-07-4] [NO][AsFg]. 

The magnetic criterion is particularly valuable because it provides a basis for differentiating sharply between essentially ionic and essentially electron-pair bonds Experimental data have as yet been obtained for only a few of the interesting compounds, but these indicate that oxides and fluorides of most metals are ionic. Electron-pair bonds are formed by most of the transition elements with sulfur, selenium, tellurium, phosphorus, arsenic and antimony, as in the sulfide minerals (pyrite, molybdenite, skutterudite, etc.). The halogens other than fluorine form electron-pair bonds with metals of the palladium and platinum groups and sometimes, but not always, with iron-group metals. 

Emissions from sinter plants are generated from raw material handling, windbox exhaust, sinter discharge (associated sinter crushers and hot screens), and from the cooler and cold screen. The primary source of particulate emissions, mainly irons oxides, magnesium oxide, sulfur oxides, carbonaceous compounds, aliphatic hydrocarbons, and chlorides, are due to the windbox exhaust. Contaminants such as fluorides, ammonia, and arsenic may also be present. At the discharge end,... 

The compound is prepared by reaction of arsenic trioxide with fluorosul-fonic acid. Also it may be prepared by treating arsenic trioxide with a mixture of sulfuric acid and calcium fluoride. 

Anhydrous cobalt(III) fluoride reacts with many nonmetallic and metalloid elements including bromine, iodine, sulfur, phosphorus, carbon, arsenic, and sihcon. It fluorinates these elements, and is reduced to Co2+. 

Ammonium chloride. Benzene, Perchloryl fluoride Benzene, Arsenic trichloride. Aluminum chloride Pentaerythritol, Nitric acid. Sulfuric acid. Methylene chloride. Urea, Sodium bicarbonate. Diethyl ether Pentaerythritol, Nitric acid. Sulfuric acid. Methylene chlorine. Urea, Sodium bicarbonate Pentaerythritol, Nitric acid. Acetone, Ethanol Pentaerythritol, Nitric acid. Acetone, Sulfuric acid. Sodium carbonate... 

Black powder. Potassium nitrate. Red arsenic. Sulfur, Antimony Phosphorus trichloride. Methyl disulfide. Methyl iodide. Toluene, Sodium fluoride. Isopropyl alcohol... 

Carbon disulfide gives an essentially quantitative yield of carbon tetrafluoride (4) and sulfur on reaction with sulfur tetrafluoride at 450 C in the presence of arsenic(III) fluoride as catalyst. At lower temperatures and with boron trifluoride as catalyst, bis(trifluoromethyl) polysulfides 5 and 6 are formed.205... 

Arsenic(III) fluoride is prepared by reacting arsenic(III) oxide with hydrogen fluoride, with calcium fluoride and sulfuric acid, or with fluorosulfonic acid.12... 

Although Moissan prepared arsenic (III) fluoride by the action of fluorine on arsenic and on arsenic (III) chloride,1 the only convenient laboratory procedure involves distillation of a mixture of arsenic (III) oxide, calcium fluoride, and concentrated sulfuric acid.2 University of Illinois, Urbana, Bl. t University of Michigan, Ann Arbor, Mich. 

A dried intimate mixture of 23.4 g. of reagent-grade calcium fluoride (0.30 mol) and 19.8 g. of arsenic(III) oxide (0.10 mol) is introduced into the reaction flask.f To this, 98.1 g. of reagent-grade concentrated sulfuric acid (0.95 mol) is added. The apparatus is then assembled, and the mixture is heated slowly on a water bath to distill the product as it is formed. 

Sulfur can be quantitatively oxidized by arsenic or antimony penta-fluoride to red compounds of composition Sig(AsFg)2 and Sig(SbFg)2 or to the deep blue compounds, Se(AsFg)2 and Sg(Sb2Fii)2 according to Eq. (26)-(29). In addition the pale yellow compound S4(SbFg)2 has been... 

Fluorine is characterized by its extraordinary chemical reactivity— it is the most active of the elements. Non-metals, such as hydrogen, sulfur, iodine, and arsenic, and metalloids, such as silicon, boron, and carbon, combine spontaneously with fluorine, becoming incandescent. All metals are attacked by the gas. The alkali metals and alkaline-earth metals take fire in a stream of the gas at room temperature, whereas the more noble metals react with fluorine when warmed. Fluorine decomposes water, forming hydrogen fluoride and liberating a mixture of oxygen and ozone. 

All manipulations were carried out in Kel-F, Teflon FEP, or fused silica reaction vessels attached to a stainless steel or Monel fluorine-type vacuum system and/or in a Vacuum Atmospheres inert atmosphere Dri lab. Hexafluorobenzme, oclafluorotoluene, octafluoronaphthalene (PCR Inc., Gainesville, FL), sulfur dioxide, anhydrous hydrogen fluoride (Matheson, E. Rutherford, NJ), cesium fluoride (ROC/RIC, Sun Valley, CA), trifluoroacetic acid (Aldrich, Milwaukee, Wl), and tungsten hexafluoride, arsenic pentafluoride, and antimony pentafluoride (Ozark-Mahoning, Inc., Tulsa, OK) were used as received after their purity was checked by infrared spectroscopy. Dioxygenyl salts and rhenium and... 

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