Nitrogen oxyfluoride

Nitrogen Oxyfluoride. See Nitrosyl Fluoride in this Section... 

Nitrogen-fluorine bonds (272kJmoU ) are weaker than carbon-fluorine bonds (485kJmol ) bnt considerably stronger than oxygen-fluorine bonds (190kJmoU ). A number of stable binary fluorides as well as nitrogen oxyfluorides have been synthesized and characterized. 

Nitrogen oxyfluoride gas, NOF, is formed by a reaction between nitrogen monoxide and fluorine gases. Write a balanced chemical equation for this reaction, and classify the reaction as one of the five major types. 

ARSENIC (7440-38-2) Finely divided material forms explosive mixture with air. Decomposes on contact with acids or acid fumes, emitting fumes of arsenic. Contact of dust or powder with strong oxidizers can cause ignition or explosion. Violent reaction with bromine azide, bromine pentafluoride, bromine trifluoride, dichlorine oxide, hypochlorous acid, nitrogen trichloride, tribromamine hexaammoniate, nitrogen oxyfluoride, potassium chlorate, potassium dioxide, powdered rubidium, silver fluoride. Incompatible with strong acids, cesium acetylene carbide, chromic acid, chromium trioxide, hafnium, halogens, lead monoxide, mercury oxide, nitryl fluoride, platinum, potassium nitrate, silver nitrate, sodium chlorate, powdered zinc. 

Nitrogen oxyfluoride. See Nitrosyl fluoride Nitrogen, refrigerated liquid. See Nitrogen Nitrogen trifluoride CAS 7783-54-2... 

Pernitryl Fluoride. See under Nitrogen Tri-oxyfluoride in this Vol... 

Powdered niobium metal, 20.0 g. (—200 mesh), and tin(II) fluoride, 52.0 g. (40 mesh),t are mixed in a molybdenum crucible in an Inconel- or nickel-pipe reactor approximately 3 in. in diameter and 10 in. long and heated to 400-500°C. in a stream of dry nitrogen. The niobium(V) fluoride volatilizes from the reaction mixture and condenses on the water-cooled lid of the reactor, which leaves metallic tin in the crucible. The yield of niobium(V) fluoride is 21.1 g., or 95% of theoretical. A very small amount of blue niobium oxyfluoride (composition of variable oxygen and fluorine content) often forms as an impurity because of the presence of minute amounts of oxygen. Anal. Calcd. for NbFs Nb, 49.44 F, 50.56. Found Nb, 49.43 F, 50.2. 

The norbelladine derivative 408, which served as the starting material for the synthesis of ( )-oxocrinine (415) (Scheme 35), may be readily prepared from the reductive animation of piperonal with tyramine followed by acylation with trifluoroacetic anhydride (191,192). When the N-acylated monophenol 408 was treated with excess thallium tris(trifluoroacetate) in methylene chloride, the di-enone 412 was obtained in 19% yield (191), whereas use of the oxidant vanadium oxyfluoride in trifluoroacetic acid/trifluoroacetic anhydride afforded 412 in 88% yield (192). Base-induced N-deacylation of 412 was accompanied by spontaneous cyclization to furnish racemic oxocrinine (415). Attempts to oxidize the free amine derived from 408 led to the formation of a number of products, some of which resulted from oxidation at nitrogen. 

There are three oxyfluorides of nitrogen, two of which, NOF and NOjF, are well known and will not be dealt with here. The third, trifluoroamine oxide, is less familiar and was isolated comparatively recently at roughly the same time by three independent groups. Fox and his co-workers made the compound in 10-15% yield by passing an NF3-02 mixture at a pressure of 10-15 mm through an electrical... 

High-purity nitrogen oxide trifluoride has been obtained by fluorolysis of the nickel salt. By first forming this compound, troublesome impurities such as carbon tetrafluoride (from the fluorine) and nitrous oxide (from the nitric oxide) are avoided. The mixture, with nitrosyl fluoride and some nitryl fluoride, is purified chemically by titrating the gas with boron trifluoride, when both of the strongly basic oxyfluorides are removed as fluoroborates ... 

CHLORINE OXYFLUORIDE (7616-94-6) Noncombustible, but many chemical reactions can cause fire and explosions. A powerful oxidizer. Reacts violently with reducing materials, alcohols, alkalis, amines, anilines, benzene, butylamine, calcium hydride, calcium acetylide, charcoal, combustible materials, ethers, hydrazine, hydrogen sulfide, finely divided metals, nitric oxide, olefins, organic substances, potassium cyanide, potassium thiocyanate, sodium, strontium hydride, sulfur, sulfur dichloride, sulfuric acid. Incompatible with hydrogen sulfide, potassium thiocyanate, vinylidene chloride. Forms heat-, friction-, and shock-sensitive explosives with calcium hydride, nitrogenous bases, isopropylamine. Attacks some plastics, rubber, and coatings. 

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