Geometrical and aromatic structure (aromaticity patterns) of the
antidot patterned 6A × 8Z (a) and 10A × 10Z (b) nanographenes.4,5 Solid red circles indicate π aromaticity. Full red ellipses
denote σ aromaticity, whereas the blue ellipse signifies σ
antiaromaticity. The intact structures are shown in (1) and (4), respectively. The 4 and 6 holes 6A ×
8Z antidots are shown in (2) and (3). The
9 orthogonal 10A × 10Z nonpassivated (5) and passivated
(6) antidots are shown in (5) and (6), respectively, whereas the corresponding 9 nonorthogonal
10A × 10Z antidots are shown in (7), (8).