## Abstract 1‐Methylallyl, 1,1‐dimethylallyl, 1,2‐dimethylallyl, 1,3‐dimethylallyl, 1,1,2‐trimethylallyl, and 1‐ethylallyl radicals have been generated in the gas phase at 20 ± 1°C by addition of H atoms, formed by Hg(6^3^__P__~1~) photosensitization of H~2~, to appropriate dienes. Their combinatio
The Disproportionation and Combination Reactions of Butyl Free Radicals 1
✍ Scribed by Kraus, John W.; Calvert, Jack G.
- Book ID
- 126057886
- Publisher
- American Chemical Society
- Year
- 1957
- Tongue
- English
- Weight
- 721 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0002-7863
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The pyrolyisis of di-tert-butyl peroxyoxalate in the presence of para-substituted benzaldehydes produces almost quantitatively the corresponding p,p'-disubstituted benzils. The formation of these products is accompanied by chemiluminescene arising from excited triplets. From the quantum yield of exc
Several attempts have been made to correlate the disproportionation and the combination rate constant ratio, k,/k,, of the alkyl radicals with the entropy change of the processes [ 1-31. Bradley [I] made a specific suggestion that the k,/k, ratio is a function of the entropy change of the processes
## Abstract Disproportionation/combination ratios P~d~/P~c~ of self‐reacting __t__‐butyl radicals are determined as a function of solvent and temperature. the observed large solvent and temperature dependences are ascribed to anisotropic reorientational motions of the radicals during their encounte