Topic of a long-standing debate about homoaromaticity in neutral molecules was elassovalene 3 , which represents a potentially neutral 10-electron homoaromatic. However, after independent preparation of 3 by the groups of Paquette and Vogel, evaluation of spectral data, magnetic criteria, and finally comparison to related aromatic annulenes, it was concluded that elassovalene 3 is not a neutral homoaromatic hydrocarbon . Therefore, the quest for a neutral homoaromatic hydrocarbon still remains. The group of Quast came close to this goal when they found that for barbaralane-derivative 4 the homoaromatic transition state was markedly stabilized in selected polar solvents , however, in the crystal structure of 4, only limited bond length equalization was observed (see below, Fig. ) rendering this molecule the closest candidate for a neutral homoaromatic hydrocarbon so far. An isolable, truly homoaromatic hydrocarbon thus far has remained elusive.