High-temperature (440 °C) chlorination of C with SbCl promotes Stone-Wales transformations and loss of the C fragment, which results in a non-classical CCl partially hydrolyzed to CCl(OH) and CCl(OH). X-ray diffraction reveals an unprecedented C cage with three heptagons and 15 pentagons arranged in fused pairs and triples. The shortest possible transformation pathways include one C loss step and four Stone-Wales transformation steps.
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