The last system we investigate is even [n]cumulenes where n and 'even' refers to the number of cumulated double bonds. Formally, these molecules have D 2d -symmetry, but when the symmetry is reduced to C2 (or D2) by substitution at the terminal carbon atoms, the orbitals become helical. Naturally, this might lead one to expect that the resulting current density will also be helical, but instead circular currents arise. We show an example of this current density in Figure . Furthermore, these systems seem to contradict the conclusions drawn for conjugated molecules, such as polyenes and graphene, as we no longer see nodal planes in the current density -neither helical nor planar.