Unusual bicyclic molecule extends frontier of aromaticity

Top view of the single-crystal X-ray diffraction structure of a dithienothiophene (DTT)-bridged [34]octaphyrin

Source: © Nature

Odd resonance stabilisation observed in ground state opens door to studying poorly understood phenomenon

The first compound that shows a peculiar form of resonance stabilisation in its ground state known as bicycloaromaticity has been made by an international team of researchers.