Abstract
The electronic structure and the interconversion of the radical cations of the (CH){sub 8} group have recently attracted attention. Among the (CH){sub 8} hydrocarbons, cubane has high symmetry (O{sub h}) and the highest strain energy. Its physicochemical properties continue to attract experimental and theoretical interest. The cubane radical cation (1) was first studied in neon matrices at 4 K. Here we report isomerization of 1 to the bridged 1,4-bishomobenzene radical cation (2), which was first demonstrated to be formed by the ring-opening of the semibullvalence radical cation. We show here that radiolytic oxidation of cuneane also yields 2.
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