Reaction with fluorinated peroxides

NQR, 22 216 olefin complexes of, 4 85 in organogermanium compounds, 27 141,143 oxyfluoride, properties of, 11 29 pentacarbonyl dimets of sulfur oxydifluoride imide, 19 203-205 pentafluoride, structure, 27 102 peroxides, 6 325-326 phthalocyanine, 7 54 physical properties of, 11 18 polysulfide complexes, 31 100, 102 envelope conformation, 31 115 synthesis, 31 103-104 [Pt[15]aneS5) f, 35 75, 77 reaction with fluorinated peroxides, 16 120 salts, lattice energy and thermochemistry, 22 52-56... 

PHENE (71-43-2) Forms explosive mixture with air (flash point 12°F/— 11°C). Violent reaction with strong oxidizers, halogens. Explosive reaction with fluorine, chlorine. Reacts with ozone, forming the shock-sensitive material ozobenzene. Reacts, possibly violently, with other oxidizers such as permanganates, oxygen, perchlorates, peroxides, many fluorides. 

EXPLOSION and FIRE CONCERNS combustible NFPA rating Health 3, Flammability 2, Reactivity 0 spontaneous explosive reactions with dibenzol peroxide, fluorine nitrate, nitrosal perchlorate, red fuming nitric acid, and tetranitromethane reacts violently with boron chloride, peroxyformic acid, fluorine, trichloronitromethane, acetic anhydride, chlorosulfonic acid, perchromates, oleum and n-halomides ignites on contact with sodium peroxide and water forms heat-or shock-sensitive explosive mixtures with hydrogen peroxide, nitromethane and 1 -chloro-2,3-epoxypropane reactions with ozone and perchloric acid form explosive products decomposition emits highly toxic fumes of NOx use alcohol foam, dry chemical, water spray, or carbon dioxide for fire-fighting purposes. 

Ethylene forms explosive mixtures in air the LEE and UEL values are 2.7% and 36% by volume of air, respectively. Its reaction with fluorine is explosively violent (AH = —112 kcal/mol), and violent with chlorine (AH = —36 kcal/mol). In the presence of sunlight or UV light, an ethylene-chlorine mixture will explode spontaneously. The reaction is explosive at room temperature over the oxides of mercury or silver (Mellor 1946, Suppl. 1956). Ethylene reacts vigorously with oxidizing substances. It reacts with ozone to form ethylene ozonide, H2C(03)CH2, which is unstable and explodes on mechanical shock. Acid-catalyzed addition of hydrogen peroxide may produce ethyl hydroperoxide, which is unstable and explodes on heat or shock ... 

The oxidising power of fluorine is seen in its reaction with water in the liquid phase, water reacts to give hydrogen peroxide and some... 

Fluorine forms very reactive halogen fluorides. Reaction of CI2 and F2 at elevated temperatures can produce GIF, CIF, or CIF 3 be obtained from the reaction of Br2 and F2. These halogen fluorides react with all nonmetals, except for the noble gases, N2, and O2 (5). Fluorine also forms a class of compounds known as hypofluorites, eg, CF OF (6). Fluorine peroxide [7783-44-0], O2F2, has also been reported (6). 

Other solutions to dealing with interferences in the detection of H O have included the use of a copperfll) diethyldithiocarbamate precolumn to oxidize the sample before it reaches the immobilized enzyme, as well as the use of a palladium/gold sputtered electrode which catalyzes the oxidation of hydrogen peroxide In addition, peroxidase has been used to catalyze the reaction between hydrogen peroxide and iodide ferrocyanide and organo-fluorine compounds Am-... 

Interaction of propane, butane or 2-methylpropane with fluorine and oxygen produces peroxides. Appropriate reaction conditions are necessary to prevent explosions. 

As a third example for an organocatalytic reaction, based on multiple hydrogen bonding and mechanistically investigated by DFT, we selected olefin epoxidation with hydrogen peroxide in fluorinated alcohol solvents, such as 1,1,1,3,3,3-hex-afluoro-2-propanol (HFIP) (Scheme 8). Here we encounter a new type of catalytic hydrogen bond the cooperative hydrogen bond. 

This enzyme [EC 1.11.1.10], also called chloride peroxidase, catalyzes the reaction of hydrogen peroxide with two RH and two Cl to produce two R—Cl and two water molecules. A heme group is one of the cofactors. This enzyme can also catalyze bromination and iodin-ation, but not fluorination. 

Oxidation of Salts from Ferulic and / -Fluoroferulic Acids. When stem sections were incubated with ferulic acid, isopropylamine or sodium salts, the cell walls of the youngest xylem or sclerenchyma elements were stained a light pink color. No reaction was observed in other cell walls (Table I). The same result was obtained with fluorinated analogues. The fact that only peroxidases from lignifying cell walls are able to oxidize ferulic compounds and syringaldazine must be emphasized. Absorption spectra of the pink oxidation products of ferulic acid and / -fluoroferulic acid in the presence of hydrogen peroxide and peroxidases extracted from tobacco cell walls ( covalently bound fraction) showed a peak at 520 nm. 

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