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  • 1 The University of Arizona Department of Chemistry 85721 Tucson AZ USA
  • | 2 Charles University Faculty of Science Prague 2 Czech Republic
  • | 3 Academy of Sciences of the Czech Republic Prague
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The current experimental and computational research in carbon clusters pointed out a need for enumeration of all possible12C/13C isotopoments of the C2v cyclic odd-numbered carbon clusters Cn. It is shown that the number of the isotopomers is given by 2k–1(2k–1+1) withk=(n+1)/2. Some illustrative computed structure and energy data for the clusters are reported, too.