Diazadioxa[8]circulenes: planar antiaromatic cyclooctatetraenes

Thomas Hensel, Denis Trpcevski, Christopher Lind, Rémi Grosjean, Peter Hammershøj, Christian Benedikt Nielsen, Theis Brock-Nannestad, Bjarne Enrico Nielsen, Magnus Schau-Magnussen, Boris Minaev, Gleb V. Baryshnikov, Michael Pittelkow