Viewing the subsequent reduced states, we find (with the exception of the triplet tetraanion) enhanced (global) aromaticity in the PCT units with increasing number of electrons. The monoanion becomes more planar than the neutral molecule, a trend that is continued through the reduced states, while also becoming less deshielded as the electron is added. The singlet and triplet dianions exhibit comparatively small shielding (between -6.5 and -8.8 ppm),