Dipl.-Chem. Stefan Ehrenberg, Prof. Dr. Rudolf Gompper, Dr. Kurt Polborn and Dr. Hans-Ulrich Wagner
Salts of the tetraazapentalenediylium ions 1 are readily accessible by reaction of the 3,5-bis(dialkylamino)-1,2,4-triazoles with 1,3-dichloro-2-azavinaamidinium salts. According to theoretical predictions they are best described as largely delocalized, almost planar 8π-electron systems. Reduction with zinc afforded the 1,3,5,7-tetrazocines 2, whose structure corresponds to that of octamethylcyclooctatetraene.