Radicals, continued

TABLE 1.13 Names and Formulas of Organic Radicals Continued)... 

TABLE 4.4 Electron Affinities of Atoms, Molecules, and Radicals (Continued)... 

This formation of Cl free radicals continues until all chlorine is consumed. Chloroform and carhon tetrachloride are formed in a similar way hy reaction of CHCI2 and CCI3 free radicals with chlorine. 

Studies on the formation and reactivity of P-centered radicals continue to be a versatile source of mechanistic information and reactions of interest in synthetic chemistry. Various new persistent or stable P-centered radicals have been described and could find applications as paramagnetic probes. The possibility of influencing the properties of organic free radicals bearing an appropriately located phosphorus group should find interesting applications. 

Enthalpies of Formation AH° (gas, 298 K) of Hydroperoxides and Peroxyl Radicals and C—02 Bond Dissociation Energies in Peroxyl Radicals—continued... 

Rate Constants of Recombination of Alkylsulfonyl Radicals—continued... 

Kinetic Parameters of Inhibitors of Cyclic Chain Termination in PP Containing Hydroperoxide Groups and Reacting with H02 Radicals—continued... 

The addition of phosphine to olefins provides today a generally applicable method for the syntheses of organophosphines. Stiles, Rust and Vaughan were the first to study the reaction systematically. It is catalysed by organic peroxides such as, for example, di-t-butyl peroxide, by a, a -azobis-isobutyro-nitrile by other free radical sources or by exposing the reaction mixture to UV- or X-radiation. The PHj radicals, produced according to Eq. (77), react further with olefins thus producing PH2 radicals continually. 

Step 5 provides a higher aldehyde as a source of hydrogen in the formation of hydrogen peroxide and a potential source for the carbon monoxide which appears as an accompanying combustion intermediate. The free butyl radical continues the decadent oxidation reaction chain. 

When the current pulse is initiated (t = 0), all the current goes to produce radical anion after 25 s, the concentration of parent material is depleted at the end of the electrode closest to the auxiliary electrode (X/L = 0) and production of the dianion commences there while anion radical continues to be produced at the middle of the electrode. Further depletion causes the shifts in current profile shown at 50 and 75 s. At 100 s, the current in the portion of the working electrode closest to the auxiliary electrode again increases with the onset of solvent decomposition. Figure 29.18 compares the resulting time-dependent EPR sig-... 

TABLE 3.3 Electron Affinities of Elements, Molecules and Radicals (continued) A. Elements... 

---