Fused-pentagon C70Cl26 obtained via chlorination-promoted Stone-Wales cage transformations of C70.
Victor A BrotsmanErhard KemnitzSergey I TroyanovPublished in: Chemical communications (Cambridge, England) (2019)
High-temperature (360 °C) chlorination of C70 with VCl4 or SbCl5 yields only IPR C70Cl26/28. Chlorination with SbCl5 at 440 °C resulted in a skeletal transformation via a two-step Stone-Wales rearrangement and the formation of non-IPR 8005C70Cl26 with two fused pentagon pairs in the carbon cage which was established by single crystal X-ray diffraction.