Silver monofluoride

Chemical Designations - Synonyms Argentous fluoride Silver monofluoride Chemical Formula AgF. 

A 1-1., four-necked, round-bottomed flask equipped with reflux condenser, sealed stirrer, thermometer, and solid addition funnel and protected from atmospheric moisture with a Drierite guard tube is carefully dried and flushed with a dry inert gas (Note I). The flask is charged with 453 g. (3.1 moles) of silver difluoride (Note 2) and 500 ml. of l,l,2-trichloro-l,2,2-trifluoroethane (Note 3), and phenyl disulfide (100 g., 0.458 mole) (Note 4) is weighed into the solid addition funnel. The stirrer is started, and phenyl disulfide is added to the slurry in small portions. An exothermic reaction occurs, and after the addition of several portions the reaction mixture reaches a temperature of 40° (Note 5). By intermittent use of a cooling bath and by adjusting the rate of addition of the disulfide, the reaction temperature may be maintained between 35° and 40°. The addition of the phenyl disulfide requires 45-60 minutes. On completion of the addition the suspension of black silver difluoride has been converted to yellow silver monofluoride, and the exothermic reaction gradually subsides. The reaction mixture is stirred for an additional 15-30 minutes without external cooling and then quickly heated to reflux. 

Sebacic acid, 43, 39 Sebacoyl chloride, 43, 37 2,2 -SebacoyldicycIohexanone, 43, 34 Silver difluoride, reaction with phenyl disulfide, 44, 82 Silver monofluoride, 44, 82 Sodium amide, as catalyst for carbona-tion of methylacetylene, 42, 98 for formation of sodium sodiophenyl-acetate, 40, 38... 

Silicochloroform Silicolluoric Acid Silicon Chloride Silicone Fluids Silicon Tetrachloride Silver Acetate Silver Carbonate Silver Fluoride Silver Iodate Silver Monofluoride Silver Nitrate Silver Oxide Silver Sulfate Silvisar 510 Slaked Lime Slow-Curing Asphalt Sodamide Sodium... 

It is convenient here to consider the compound disilver monofluoride (or silver subfluoride). This was reported to have an anti-cadmium iodide structure in early work (5), and this has been confirmed more recently (6). From X-ray single-crystal results the unit cell is hexagonal, a = 2.996, c = 5.691 A, space-group C3m, and the Ag—F separation 2.451 A, almost identical with that in silver monofluoride (2.468 A). The structure consists of layers, with a plane of fluorine atoms sandwiched between two planes of silver atoms, giving the fluorine atom a coordination of six silver atoms, the same as in silver monofluoride. The silver atoms have separations of 2.996 and 2.814 A, compared with 2.889 A in the metal itself, and in line with the metallic conductivity of the compound. 

Silver Fluoride Argentous Fluoride Silver Monofluoride ... 

SILVER FLUORIDE or SILVER(I) FLUORIDE or SILVER MONOFLUORIDE (7775-41-9) AgF AgF HOH Moisture- and light-sensitive, hygroscopic, corrosive solid. Contact with acetylene produces silver acetylide, a shock-sensitive explosive material. Contact with ammonia produces conpounds that are explosive when dry. Contact with hydrogen peroxide causes violent deconposition and release of oxygen gas. Contact with boron, strong oxidizers may cause fire and explosions. Violent reaction when mixed with calcium hydride (fiiction sensitive) dimethyl sulfoxide (DMSO) silicon. Soluble silver compounds attack some forms of plastics, rubber, and coatings. 

CAS 7775-41-9 EINECS/ELINCS 231-895-8 Synonyms Silver (I) fluoride Silver monofluoride... 

Silver matt powder. See Tin Silver monoacetate. See Silver acetate Silver monofluoride. See Silver fluoride Silver nitrate... 

Silver lodate Silver Monofluoride Silver Nitrate Silver lodate Silver Fluoride Silver Nitrate Sodium Hexafluorosilicate Sodium Hydride Sodium Silicofluoride Sodium Hydride... 

Fluoroform has proved resistant to photochemical nitrosation with nitrosyl chloride, but the haloforms CHFaCl and CHFClj have been converted by this technique into chlorodifluoronitrosomethane and dichloro-fluoronitrosomethane in low yield. The same method has been used to convert chloroform into trichloronitrosomethane in low (ca. 15%) yield at 40 °C this nitroso-compound reacts with silver monofluoride to give trifluoronitrosomethane(<2%) and 0-nitroso-AW-bistrifluoromethylhydrox-ylamine (ca. 20%), with silver monofluoride in dimethylformamide to yield trifluoronitrosomethane (<2%), hexafluoroazoxymethane (10-5%), and... 

A soln. of bromide in benzene added dropwise to a vigorously stirred suspension of finely powdered silver monofluoride and cyclohexene in benzene or acetonitrile frans-2-bromocyclohexyl fluoride. Y 80%. F. e. s. L. D. Hall,... 

Alkyl fluorides have been prepared by reaction between elementary fluorine and the paraffins, by the addition of hydrogen fluoride to olefins, by the reaction of alkyl halides with mercurous fluoride, with mercuric fluoride, with silver fluoride, or with potassium fluoride under pressure. The procedure used is based on that of Hoffmann involving interaction at atmospheric pressure of anhydrous potassium fluoride with an alkyl halide in the presence of ethylene glycol as a solvent for the inorganic fluoride a small amount of olefin accompanies the alkyl fluoride produced and is readily removed by treatment with bromine-potassium bromide solution. Methods for the preparation of alkyl monofluorides have been reviewed. ... 

Leclanche or dry cell Alkaline Cell Silver-Zinc Reuben Cell Zinc-Air Fuel Cell Lithium Iodine Lithium-Sulfur Dioxide Lithium-Thionyl Chloride Lithium-Manganese Dioxide Lithium-Carbon Monofluoride... 

The silver(I) fluoride/bromine and silver(I) fluoride/iodine systems can be exploited for generation in situ and electrophilic addition of "bromine monofluoride and iodine monofluoride to cyclohexene, mcthylenecyclohcxane, styrene, indene, and acenaphthylene.55... 

The only example of a monofluoride is that of silver, although such compounds might be expected for copper and gold, in the same triad. Silver fluoride has the simple rock-salt structure, and the most recent... 

The source of chlorine is most often chlorine, hexachloromelamine, /V-chlorosuccinimide or tert-butyl hypochlorite. The fluoride source is usually hydrogen fluoride, boron trifluoride or, recently, silver(I) fluoride. Chlorine fluoride can also undergo addition to alkenes when chlorine monofluoride or chlorine trifluoride or a mixture of both is employed. ... 

The reagents for iodine fluoride addition to unsaturated centers are iodine229 or A -iodosuc-cinimide (NIS),221 258 and iodine pentafluoride, hydrogen fluoride,221,258 potassium fluoride, silver(I) fluoride229 278 or ammonium hydrogen difluoride/aluminum trifluoride220 as fluoride ion sources. In addition to the in situ iodofluorinations with iodine monofluoride,l96,22< 227 and (difluoroiodo)methane,194,19 iodofluorination with bis(pyridine)iodonium tetrafluoro-borate219 is described. 

On the other hand, the medical condition where the heart beats too fast is known as tachycardia. If untreated, tliis condition may lead to ventricular fibrillation, that is, a condition in which the heart stops beating and shakes uncontrollably and is usually fatal. In 1980, a special device was developed and implanted in patients. It could sense the condition and provide a shock that would stop the fibrillation and restore the normal sinus rhythm via an electrode sutured onto the heart. The device was first powered by a lithium/vanadium pentoxide system later it was replaced by a system using a cathode material of silver vanadium oxide (SVO or Ag2V40ii). This is the actual system used in modem ICDs (implantable cardioverter/defibrillator). Another material used is the lithium/manganese dioxide system. Also, a new system using a sandwich cathode design with an inner cathode material of carbon monofluoride and an external cathode layer of silver vanadium oxide is in wide use. 

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