Abstract: Trialkylsilylalkyl substituents (R $ i), C-are powerful electron donors, which enormously modify the properties of parent a systems like ethylene, cyclopentadiene, or 1, 4- cyclohexadiene. Owing to the destabilization of the molecular ground state and the charge delocalization in the corresponding radical cation, the vertical first ionization energies drop down to 7 eV (!) and selective one-electron oxidation with AICI3 in H2CC12 produces ...
