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Letter
Nature Materials 7, 790–794 (1 October 2008) | doi:10.1038/nmat2275
Two Ih-symmetry-breaking C60 isomers stabilized by chlorination
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Abstract
One abiding surprise in fullerene science is that Ih-symmetric buckminsterfullerene C60 (ref.|[nbsp]|1) (Ih–C60 or |[num]|1,812C60, the nomenclature specified by symmetry or by Fowler|[rsquo]|s spiral algorithm) remains the sole C60 species experimentally available. Setting it apart from the other 1,811 topological isomers (isobuckminsterfullerenes) is its exclusive conformity with the isolated-pentagon rule, which states that stable fullerenes have isolated pentagons.
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