Hence, the cubes can in theory be both globally 3D-aromatic and six-fold locally 2Dantiaromatic. Compounds which are Baird-aromatic follow Baird's rule which tells that the lowest ππ* triplet state of [4n]annulenes is aromatic, and it applies to electronically excited states and to openshell ground states. For a (macro)cyclic two-dimensional molecule which is Hückelaromatic one can achieve a Baird-aromatic triplet state by either removal or addition of two electrons, exemplified by, respectively, the benzene dication and dianion for which there are derivatives shown experimentally to have either triplet ground states or low-lying triplet states. Similar to the 2D-Baird-aromatic benzene dication and dianion, true 3D-Bairdaromaticity will occur for the trication and trianion as their -electron occupancies allow for half-filled triply degenerate orbitals with an electron count of 6n -1. Hence, true open-shell 3D-Baird-aromaticity will not occur for the triplet dication even though 1 , which has a triplet ground state, has a NICS(0) value of -2.6 ppm 48 which (at best) suggests a modest Bairdaromatic character. Instead, the triplet dication of a true 3D-aromatic species would have an electron configuration with four -electrons in the triply degenerate HOMOs, an electron configuration that due to the Jahn-Teller effect should lead to a distortion away from the highsymmetry. Now, what is the electron count for Baird-aromaticity in a bicyclic macrocycle which is 2D-aromatic-in-3D? If one goes by simple -electron counts, the quartet trication of both Type A and Type B expanded naphthalenes with k = l = m can be Baird-aromatic as each linker will have 4k -1 -electrons for Type A and 4k + 1 -electrons for Type B providing for three Baird-aromatic 4n circuits (n = 2k). Additionally, the triplet dication can be Bairdaromatic in one single cycle, as found by Wu and co-workers. For 3D-aromatic species, in contrast, only the trication in its quartet state can exhibit Baird-aromaticity.