title: Heptacene: increased persistence of a 4n+2 π-electron polycyclic aromatic hydrocarbon by oxidation to the 4n π-electron dication.
authors.affiliation: Institut für Organische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Einholz
authors.forename: Holger F
authors.initials: HF
authors.lastname: Bettinger
keywords: UV/Vis spectroscopy; aromaticity; dications; heptacene; sulfuric acid