4 years ago

Meso-aryl [20]π Homoporphyrin: The simplest expanded porphyrin with smallest Möbius Topology

Alagar Srinivasan
The unstable conjugated homoporphyrin is successfully stabilized by introducing the meso-aryl substitutents. It was evident from the moderate diatropic ring current in NMR analysis that the newly formed 20π conjugated freebase and its protonated form exhibit the Möbius aromatic character. Further, the complexation of ligand with Rh(I) salt afforded a unique binding mode and retaining Möbius aromaticity. Overall, these are the smallest Möbius aromatic molecules, which are unambiguously confirmed by spectral, crystal analyses and supported by theoretical studies.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201709859

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