Giant Porphyrin Goes Big On Aromaticity

By increasing the number of pyrrole groups in a porphyrin ring from the usual four to 12, a team led by Dongho Kim of Yonsei University and Atsuhiro Osuka of Kyoto University succeeded in making a dodecaphyrin containing 50 π electrons—the largest aromatic molecule known to date (Chem. Eur. J. 2015, DOI: 10.1002/chem.201500650). The compound bests the former aromaticity record holder, a [46π]decaphyrin the same researchers made last year.

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