Hrvoj Vančik, Alexander M. Genaev and Vyacheslav G. Shubin
FTIR spectra suggest that ionization of
2-exo-chloro-2-methylbenzonorbornene
in an SbF5 matrix at -196 °C leads to
2-methyl-2-benzonortricyclyl cation which rearranges into a partially
π-bridged 2-methylbenzonorbornen-2-yl ion at
-123 °C.