Interestingly, both hole and electron transfer integrals present similar magnitudes in Figs. and, contrarily to what is found in the tubular configurations in Figs. and, where electron transfer integrals are one order of magnitude larger than hole transfer integrals. The herringbone configuration shown in Fig. presents electron and hole transfer integrals of similar magnitudes, although slightly bigger values are found again for the electron case. As expected, Figs. and show an exponential decay of values as a function of the distance, due to the loss of over-lap between the two π-systems. The relative orientation of molecules is also critical for the understanding of electronic coupling values. If we fix now our attention to Fig. , t e is favorable for a perfectly tubular configuration while a displacement of 2 Å produces a dramatical decrease of electron transport. In Fig. , a rotation of ∼11°(2π/32 rad) is enough to reduce the hopping (t h ) to a value lower than 1 meV.