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Methyl radical radical

Fig. 22. Apparatus for the detection of organic free radicals. Methyl radicals are formed in the heated zone and react with the lead mirror downstream to form volatile tetramethyllead (199). Fig. 22. Apparatus for the detection of organic free radicals. Methyl radicals are formed in the heated zone and react with the lead mirror downstream to form volatile tetramethyllead (199).
The fluorine atoms in trifluoroethylene enhance the rate of attack by the nucleophilic methyl radicals, but retard attack by the electrophilic trifluoromethyl radicals. Methyl radicals add preferentially to the most substituted end of trifluoroethylene, in direct contradiction of the resonance stabilization hypothesis. In fact we can see that the reaction of methyl radicals... [Pg.59]

A typical determination is that of Lossing and Tickner for the methyl radical. Methyl radicals were produced by the pyrolysis of mercury dimethyl diluted by helium, and the mass spectrum showed that only CH3, mercury, ethane and a trace of methane were formed. Sensitivity calibrations were obtained in the usual way for the stable substances, and then the net peak at mass 15, after subtraction of the contributions from mercury dimethyl, ethane and methane, was determined. At high temperatures of pyrolysis, where the methyl radicals were most abundant, the sensitivity for the mass 15 peak of the methyl radical could then be calculated on the basis of 100 % carbon balance. As discussed earlier, wall reactions may lead to appreciable disappearance of the radical under observation, and such effects must be taken into account when calculating the sensitivity of the apparatus. Corrections of these kinds were applied to the experiments described above when Ingold and Lossing discovered that part of the methane observed was produced by reaction in the ionization chamber. The smallest relative concentration of radicals which can be determined accurately i.e. where several species give rise to the... [Pg.299]

During the nonactivated reaction steps of the model (i.e. irreversible oxidation of CH3 radicals), methyl radicals react with the surface oxygen species to form adsorbed methoxy complexes by the following reaction ... [Pg.171]

One way to form a carbon radical is by a chemical reaction between a neutral species such as methane and a preformed radical such as Br (21). Methods that generate Br will be discussed in Chapter 11 (Section 11.9). In this reaction, the bromine radical donates a single electron (note the single-headed arrow much like a fishhook) to one hydrogen atom of methane, which donates one electron from the covalent C-H bond (see the arrow). When this occurs, the other electron in the C-H bond is transferred to the carbon and the resulting products are a new carbon radical (methyl radical 22) and H-Br. Note that there are two electrons in the H-Br covalent bond one derived from the bromine radical and one from the C-H bond on methane. [Pg.261]

From Lead and Methyl Radicals. Methyl radicals deplete a carbon-free lead mirror [10], presumably forming Pb(CH3)4 [43], although formation of Pb(CH3)2 has also been suggested... [Pg.71]

Carbocations Carbon Radicals Methyl Radical Carbanions... [Pg.1213]

Give an example of each of the following primary radical, secondary radical, tertiary radical, methyl radical, benzylic radical, allylic radical. [Pg.234]


See other pages where Methyl radical radical is mentioned: [Pg.171]    [Pg.6]    [Pg.171]    [Pg.593]    [Pg.139]    [Pg.195]    [Pg.178]    [Pg.71]    [Pg.71]    [Pg.71]    [Pg.6]    [Pg.135]    [Pg.68]    [Pg.71]    [Pg.153]    [Pg.6]    [Pg.169]    [Pg.341]    [Pg.153]    [Pg.216]    [Pg.177]    [Pg.167]    [Pg.127]    [Pg.560]   
See also in sourсe #XX -- [ Pg.86 , Pg.88 ]

See also in sourсe #XX -- [ Pg.261 ]




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1- Methyl pyridine reaction with radicals

1- Methyl-5-hexenyl radical

2-Methyl-3-phenyl-3- -2-propyl radical

2-methyl-2-butanol radical cation

2-methyl-2-propyl radical

5- Hexenyl radical methyl substituted

Amino methyl radical

Case Studies Vibrationally Averaged Properties of Vinyl and Methyl Radicals

Chlorine+methyl radical

Chromanol methyl radical

D-Labelled Methyl Radicals Nuclear Spin-Rotation Couplings

D-labeled methyl radicals

Disubstituted methyl radicals, RSEs

Energy values methyl radicals

Ethane Dissociation and Methyl Radical Recombination

Ethane formation from methyl radicals

Ethyl and methyl radicals

Ethylene reaction with methyl radicals

Free radical methylation

Free radical, arylation methylation

Free radicals methyl, structure

H-Atom Abstraction by Methyl Radicals in Organic Glasses

Hydrogen atom - methyl radical pairs

Magnesium Methyl radical

Methane reaction with methyl radical

Methyl Loss from Acetone Radical Cation

Methyl acrylate , free-radical

Methyl acrylate , free-radical polymerization

Methyl acrylate atom transfer radical

Methyl acrylate reaction with phenyl radicals

Methyl allyl radical

Methyl disulphide radicals

Methyl free radical

Methyl methacrylate free radical addition polymerisation

Methyl methacrylate free-radical emulsion

Methyl methacrylate free-radical polymerization

Methyl methacrylate radical attack

Methyl methacrylate radical polymerization

Methyl methacrylate radical polymerized

Methyl methacrylate reaction with phenyl radicals

Methyl methacrylate reaction with radicals

Methyl nitrate radicals

Methyl peroxy radical, hydrogen

Methyl peroxy radicals

Methyl phenyl radical pair

Methyl propionate, radical attack

Methyl radical

Methyl radical

Methyl radical Methylamine

Methyl radical addition

Methyl radical bonding models

Methyl radical carbon

Methyl radical chain reaction

Methyl radical detection

Methyl radical dimerization

Methyl radical electron distribution

Methyl radical heteroatom containing

Methyl radical hybrid orbitals

Methyl radical hyperfine coupling constant

Methyl radical intermediate in chlorination of methane

Methyl radical intermediates

Methyl radical methane

Methyl radical molecular orbitals

Methyl radical nitrite esters

Methyl radical nonplanar

Methyl radical oxidation

Methyl radical oxidation recombination

Methyl radical phase

Methyl radical reaction with hydroxyl

Methyl radical reaction with molecular oxygen

Methyl radical reactions

Methyl radical recombination

Methyl radical recombination rate constant

Methyl radical spectrum

Methyl radical structure

Methyl radical structure and stability

Methyl radical transfer

Methyl radical tropospheric

Methyl radical with methane

Methyl radical, bonds

Methyl radical, electron affinity

Methyl radical, electronic structure

Methyl radical, formation

Methyl radical, geometry

Methyl radical, half-life

Methyl radical, proton hyperfine coupling constant

Methyl radical, symmetry axis

Methyl radicals MeCO)

Methyl radicals calculation methods

Methyl radicals cyclo

Methyl radicals electron spin resonance

Methyl radicals hydrogen atom transfer

Methyl radicals laser flash photolysis

Methyl radicals objectives

Methyl radicals polarity

Methyl radicals reaction with propionic acid

Methyl radicals reactions, importance

Methyl radicals transition intensities

Methyl radicals, absorption spectrum

Methyl radicals, absorption spectrum reaction

Methyl radicals, abstraction reactions

Methyl radicals, chain termination

Methyl radicals, combination

Methyl radicals, from decomposition

Methyl radicals, from radiolysis

Methyl radicals, oxidation source

Methyl radicals, vibrationally averaged

Methyl sulphide radicals, reactions

Methyl sulphone radical

Methyl thiyl radical

Methyl thiyl radical formation

Methyl viologen cation radical

Methyl, alcohol radical

Methyl, free-radical transfer reactions with

Methyl-butyl-2 radical

Monosubstituted methyl radicals

Organic reaction mechanism methyl radical

Potential energy surface methyl radical transition state

Pyrrole 1-methyl-, radical substitution

Quinoline 2- methyl-, radical substitution

Quinolines 2- methyl-, radical substitution

Radical Carboxylation with Methyl Oxalyl Chloride

Radical alkoxycarbonyl)methyl

Radical ring-opening with methyl methacrylate

Radicals methyl, relatively nucleophilic

Radicals tris methyl

Radicals, anions methyl

Reaction with halogenated methyl radicals

Reaction with methyl radicals

Reactions of methyl radicals

Temperature dependence of 1 values for -butyl radicals with dodecane or 3-methyl-3-pentanol as solvent

Toluene methyl radical

Transition state theory methyl radicals

Triphenylmethyl reaction with methyl radicals

Trisubstituted methyl radicals

Vinylidene fluoride methyl radicals

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