In conclusion, no 3D-aromatic -conjugated molecule has to our knowledge so far been described in experiments. At this point we want to stress that, although we bring a different rationalization of the aromaticity in 1 -3 and 1 6+ than provided earlier, it is truly important that new compounds that stretch and provoke our understanding of chemical bonding phenomena are designed and analyzed. Healthy discussions on their chemical brings chemistry forward as a science. Today, the term 3D-aromaticity is used for a number of different bonding patterns that involve aromatic interaction in three dimensions. Yet, if insufficiently well defined, it will lose its utility as a meaningful concept for chemical bonding analyses and the applications that rest upon such analyses. In our view, it is time the term is put on a solid foundation which applies to both and -bonded systems. This description of 3D aromaticity should comply with Aihara's original finding on the compounds which he labelled as 3D aromatic. Experimental section