## Abstract The Hg(6^3^__P__~1~) photosensitized decompositions of 3‐methyl‐1‐butene, 2‐methyl‐2‐butene, 3,3‐dimethyl‐1‐butene, and 2,3‐dimethyl‐1‐butene have been used to generate 1‐methylallyl, 1,2‐dimethylallyl, 1,1‐dimethylallyl, and 1,1,2‐trimethylallyl radicals in the gas phase at 24 ± 1°C. F
Photocyclization of Substituted Allyl Radicals and Properties of the Resulting Cyclopropyl Radicals
✍ Scribed by Radzig, V. A.; Ustynyuk, L. Yu.; Osokina, N. Yu.; Pergushov, V. I.; Mel'nikov, M. Ya.
- Book ID
- 127271714
- Publisher
- American Chemical Society
- Year
- 1998
- Tongue
- English
- Weight
- 152 KB
- Volume
- 102
- Category
- Article
- ISSN
- 1089-5639
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The structures of a-X-cyclopropyl and a-X-isopropyl radicals (X = H, CH3, NH2, OH, F, CN, and NC) are reported at the RHF 3-21G level of theory. The isopropyl radicals are pyramidal with out-of-plane angles varying from 12" (X = CN) to 39" (X = NH2), and barriers to inversion ranging from 0.4 kcal/m
Several experimental techniques have evolved to differentiate between two possible mechanisms of the thermal decomposition of oeroxv esters. These two mechanisms, the concerted and the non-concerted (Scheme I), have been investi-1 aated bv studvinq activation parameters , the effect on rates of deco