Formation of methylpropargyl radicals from tetramethylcyclobutadiene radical cations: an esr study
β Scribed by Katsutoshi Ohta; Masaru Shiotani; Junkichi Sohma; Akinori Hasegawa; Martyn C.R. Symons
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 574 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Exposure of dilute solutions of CH,C=CCH3 in CCI,FCCIF2 and related solvents to ionizing radiation at 77 K produced the radical cation (CH3C=CCH3 )'. On annealing, these were initially converted into the corresponding dimer cation, c-C,( CH,
π SIMILAR VOLUMES
Compared with normal and bridge-head aminium cations, the i.riethylenediamine cation is relatively stable. Its ESR specffum shows that the wo nitrogen atoms and all the protons are magnetically equivalent even at 77 K. This f&ours a symmetrical ground state rather than a dynamic equilibrium between