Abstract:
Anew fused core-modified 32p heptaphyrin
with Mçbiusaromatic character is reported. The
1
HNMR
data indicated aweak Mçbius aromaticityat298 K;
however,at213–183K,the molecule predominates [4n]p
Mçbiusconformation with strong diatropic ring current,
which was further confirmed by X-ray analysis. The protonation experiment led to preservation of the Mçbius aromaticity at 298 K. Nevertheless, the experimental results
were furthersupportedbytheoretical studies.Overall,this
study represents the first example of Mçbius aromatic
fused core-modified expanded porphyrin
