Contrary to that, the spin-density of the BRC reaches a ratio of 62%/38%. This, however, is not observed for the non-truncated molecular models, which all feature a larger degree of delocalization at shorter intermolecular distances (see Fig. ). It was expected that the overlap of the inner pair co-factor densities and, as the result, the spin-density delocalization degree could both be increased by mutual parallel displacement of aromatic macro-cycles. In case of the BRC, this effect can, indeed, be observed for both truncated and non-truncated models as seen from Fig.