A phosphorus-containing hybrid porphyrin was successfully prepared via
the BF3-promoted dehydrative condensation between
2,5-bis[hydroxy(phenyl)methyl]thiophene. The NMR and UV–Vis absorption
spectra, electrochemical measurements, and DFT calculations have
revealed that the σ3-P,N2,S-hybrid porphyrin
exhibits high aromaticity as an 18π-electron system in terms of
both geometric and magnetic criteria.