This aromaticity is evidenced by the chemical shift of the ring protons in proton NMR spectroscopy (between 7.27 and 8.77 ppm), clearly indicating a strong diamagnetic ring current.
To svojstvo se potvrđuje hemijskim pomeranjem protona prstena u protonskoj NMR spektroskopiji (između 7.27 i 8.77 ppm), što jasno ukazuje na jaku dijamagnetičku struju prstena.