Usually low 1st and 2nd ionization energies of Me3SiCH2-substituted C6H6 derivs. (e.g., I) are correlated with the 1st and 2nd charge-transfer excitation energies of their C2(CN)4 complexes. ESR spectra of the corresponding radical cations (e.g., II) confirm spin delocalization and yield addnl. information on the mobility and preferred conformation of the substituent groups. on SciFinder(R)
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