Ab initio molecular orbital and density function theory (DFT) calculations as used to calculate the structure optimisation and configurational features of cycloundeca-1,2,4,5,7,8,10-heptaene (2) showed that the combination of two allenic units of the same chirality and a unit of opposite chirality yields an enantiomeric Z-isomer pair (RSR and SRS) of C2 symmetry, which is the most stable configuration.
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