On the alleged 3D-aromaticity of 1 and 1 . Next, we now turn to the claimed 3Daromaticity of compounds 1 and 1 6+ . To determine if a compound is 3D-aromatic one must analyze its electronic structure. As noted in the Introduction, a 3D-aromatic molecule should have (at least) triply degenerate orbitals, but this degeneracy will be lifted when heteroatoms are incorporated in the molecular scaffold (see CB5H6 -, Figure ) or when effects such as bond length alterations lower the symmetry. Compounds 1 and 1 6+ are aromatic in their D3-symmetric structures, they are three-dimensional, have 6n + 2 -electron counts and extensive electron delocalization. We argue that 1 -3 as well as 1 6+ are expanded and puckered versions of PAHs, instead of true 3D-aromatics, where the π-electrons are shared between a set of circuits that each fulfil the 4n + 2 rule (Figure ) (for 2 and 3 with different n). The total ring-current picture of a PAH is constructed from all the different circuits that can be drawn. Naphthalene has three circuits; where the two hexagons (a and b) correspond to local six-electron circuits (A and B), while both hexagons are involved in the ten-electron circuit C. Furthermore, the induced diatropic ring-currents of circuits A and B, generated in an external magnetic field, are equivalent and cancel each other in the central C-C bond so that naphthalene exhibits an induced diatropic ring current exclusively along the perimeter. A similar analysis can be made for anthracene and other PAHs. Now, to what extent is the aromaticity of macrocycles 2 and 3 reminiscent of that of naphthalene? Also, can naphthalene be altered/modified to the extent that its ring currents resemble those of the two bicyclic macrocycles 2 and 3, and should one not consider three aromatic cyclic paths in 2 and 3?