Möbius aromatics arising from a CCC ring componentElectronic supplementary information (ESI) available: AM1 allene orbitals (Fig. 1), computed 3D coordinates (as PDB files) and selected orbitals (as 3DMF files). See http://www.rsc.org/suppdata/cc/b0/b002462g/
Abstract
Replacement of one planar CC unit in Hückel 4n + 2 aromatic rings by a twisted CCC results in chiral 4n π Möbius aromatic rings.