Chlorine fluoride, reaction

Hypochlorites- are obtained by reaction of fluorinated carbonyl compounds, such as carbonyl lluonde, with an alkali metal fluoride and chlorine fluoride f62, 720]... 

With nitriles, products from addition of one or two equivalents of halogen fluoride can be obtained [725, 726, 127, 128] (equations 25 and 26) on reaction with chlorine fluoride or bromine and an alkali metal fluoride. 

Elimination reactions of fluorine compounds are not limited to the removal of simple molecules Frequently, large molecules or combination of smaller ones are formed as by-products, especially in pyrolytic reactions For example perhalo genated acid chlorides lose not only carbon monoxide but also chlorine fluoride [106, 107] (equations 74 and 75)... 

Waterfeld, A. et al., J. Chem. Soc., Chem. Comm., 1982, 839 Reaction of chlorine fluoride with trifluorosulfur nitride is rather hazardous and may lead to violent explosions. A safer alternative preparation is to use chlorine and mercuric fluoride in place of chlorine fluoride. 

Numerous reactions have been reported in which FCIO2 is formed as a product. Most of these involve the interaction between a chlorine fluoride or oxyfluoride with an oxide or hydroxide. The oxidation state of the chlorine fluoride is not important since +1, -l-III, and - -V compounds all yield FCIO2 owing to the tendency of the lower oxyfluorides, such as FCIO, to disproportionate. The presence of excess chlorine fluoride is important to avoid formation of chlorine oxides. The following equations are typical examples for these types of reactions ... 

Very little is known about chlorine fluoride oxide radicals. Although the formation of the FClOs" radical anion in the reaction of FCIO3 with nucleophilic agents has been postulated (286), it has not been isolated and characterized. 

Fluorine also reacts with other halogens, forming interhalogen compounds. While with bromine and iodine it reacts vigorously at ordinary temperatures, with chlorine the reaction occurs at 200°C. Such interhalogen products with these halogens include iodine heptafluoride, bromine trifluoride, bromine pentafluoride, and chlorine trifluoride. Metalloid elements, such as arsenic, silicon, selenium, and boron also inflame in a stream of fluorine, forming fluorides. 

Thus, the reaction of 1,4-dioxane with sulfur tetrafluoride and hydrogen fluoride in the presence of small amounts of sulfur chlorides or chlorine (0.3 0.5 %) at 185-220°C results in the replacement of 3-5 hydrogen atoms by fluorine to give mixtures of a polyfluoro-1,4-dioxane 1 or 3 and 2-fluoroethyl-l,2,2,2-tetrafluoroethyl ether (2) in a ratio dependent on the reaction temperature.237 Using technical grade sulfur tetrafluoride without addition of a sulfur chloride or chlorine, this reaction is not reproducible, but when carefully purified sulfur tetrafluoride is used the reaction does not give fluorinated products, instead a tar is formed.237... 

Fluorination with elemental fluorine diluted 1 20 with nitrogen was used to prepare pentafluorophenyl tellurium trifluoride from bis[pentafluorophenyl] ditellurium at — 60° with fluorotrichloromethane as the reaction medium. The yield in this reaction was 80% 4-Methoxyphenyl tellurium trifluoride was obtained by electrochemical oxidation of the diaryl ditellurium in 0.5 M hydrofluoric acid at platinum electrodes2. Bisfpentafluoroethyl] ditellurium and chlorine fluoride (1 6) reacted at — 78° to give pentafluoroethyl tellurium trifluoride, a white solid melting at 95°3. The same compound was obtained with xenon difluoride as the fluorinating agent and melted at 143°4. 

The reaction of bis[trifluoromethyl] tellurium with chlorine fluoride at — 78° with fluorotrichloromethane as solvent first produced his[trifluoromethyl] tellurium chloride fluoride. When the reaction mixture was concentrated, the l9F-NMR signal of the chloride fluoride disappeared and was replaced by signals for bis[trifluoromethyl] tellurium difluoride and bis[trifluoromethyl] tellurium dichloride2. The diorgano tellurium dihalides reported in the literature as mixed dihalides might be mixtures of symmetrical dihalides. All mixed halide species were identified by 125Te- and 19F-NMR spectroscopy in dimethylformamide solutions prepared from equimolar amounts of two different tellurium dihalides3. 

A method using silver(I) fluoride and chlorine is sufficiently mild for the isolation of the chlorine fluoride adducts in good yield, whereas the combination of IV-chlorosuccinimide and hydrogen fluoride gives no fluorinated products. The reaction of chlorine with a suspension of D-glucal triacetate and silver(I) fluoride in an acetonitrile/benzene solution is unusual in that it gives all four possible 3,4,6-tri-0-acetyl-2-chloro-2-deoxy-D-glycopyranosyl fluorides... 

These complexes, which are readily synthesized by transmetalation see Transmetalation) from the appropriate Cp metal and MX4 (L = U) or (jj -L)MX3 (L L ), represent a large family of qnite always air-stable componnds. The bromides and iodides are also obtained from chlorine exchange reactions with the appropriate boron trihalide. The flnorides can be obtained by metathesis see Metathesis) of chlorides derivatives with MesSnF. With only one equivalent of tin reagent per mole of dichloride, partial fluorination occms affording mixed hahde metallocenes. The fluorides are also prepared by chloride/fluoride, by chloride/NMe2 followed by NMe2/fluoride exchange, and by oxidative addition see Oxidative Addition). ... 

Trimethylsilylamino tellurium pentafluoride lost the trimethylsilyl group in reactions with hydrogen fluorideS cesium fluoride, chlorine fluoride, sulfur fluorides, selenium tetrafluo-ride, phosphorus pentafluoride, tungsten hexachloride, molybdenum hexafluoride, and tungsten hexafluoride. ... 

These reactions can be carried out in glass vessels. The glass will become only slightly frosted. Bis[trifluoromethyl] tellurium difluoride was also obtained using chlorine fluoride, bromine trifluoride, or xenon difluoride as fluorinating agents Diphenyl tellurium dfluoride was produced when diphenyl tellurium in acetonitrile was treated at 20° with methyliodine(III) difluoride or 2,2,2-trifluoroethyliodine(IIl) difluoride. ... 

---