20637-23-4Relevant academic research and scientific papers
Alkyl phenylglyoxylates as radical photoinitiators creating negative photoimages
Hu, Shengkui,Neckers, Douglas C.
, p. 1737 - 1740 (2007/10/03)
Alkyl phenylglyoxylates are shown to be efficient photoinitiators for acrylate polymerization. Benzoyl and phenyl radicals derived from intermolecular hydrogen abstraction are the initiating species. A negative photoimage system was developed based on thi
A Linear Free Energy Relationship for an Equilibrium Isotope Effect
Stevenson, Gerald R.,Wehrmann, Glenn C.,Reiter, Richard C.
, p. 901 - 905 (2007/10/02)
The solution electron affinities of a series of monosubstituted phenyl-d5 benzenes relative to their perprotiated analogues were measured via electron paramagnetic resonance studies.The equilibrium constant for the electron transfer X-C6H5.- + X-C6D5 X-C6H5 + X-C6D5.-, where X = H, C6D5, CN, NO2, OCH3, tert-butyl, was found to be less than unity for all cases.However, this equilibrium constant is closer to unity for those systems where the substituent is electron withdrawing in nature, and it deviates further from unity for those systems that have an electron-donating group as the substituent.A linear free energy relationship was found, and the positive ρ value (0.34) is presumably due to the fact that there is a smaller excess charge and spin density from the antibonding electron in the area of the molecule where isotopic substitution takes place, for those systems where the ? value of the substituent is positive.
DECOMPOSITION OF PEROXOBENZOIC ACID IN BENZENE CATALYZED BY TRANSITION METAL 2,4-PENTANEDIONATES
Lederer, Pavel,Macova, Eva,Veprek-Siska, Josef
, p. 673 - 679 (2007/10/02)
The decomposition of peroxobenzoic acid in benzene was studied, and catalytic effects of Fe(III), Mn(III), Co(II), Co(III), and Cr(III) on the reaction rate and the composition of the reaction mixture were investigated.An analogous experiment carried out in perdeuterobenzene and determination of the distribution of deuterium in the reaction products provided evidence for the participation of the solvent in peroxobenzoic acid decomposition.
Mechanism of Thermal Decomposition of Tetra-aryltellurium Species
Glover, Stephen A.
, p. 1338 - 1344 (2007/10/02)
Tetra-aryltellurium species decompose upon heating giving good yields of diaryl tellurides and biphenyls.Radical-scavenging experiments show that phenyl radicals are not intermediates in the formation of biphenyls.In contrast, cross-over experiments give mixed biphenyls as well as mixed diaryl tellurides, but these are formed by a statistical redistribution of organic groups giving mixed tetra-aryltellurium species which decompose thermally in an indiscrimate fashion.
