title: sigma-Homoconjugation in Cyclically Preoriented N4-(Radical) Cations-N small middle dot small middle dot small middle dotN Bond Lengths >2 Å This project has been supported by the Deutsche Forschungsgemeinschaft, the Fonds der Chemischen Industrie and BASF AG. We thank Dipl.-Chem. V. Peron and B. Geiser for technical assistance.
authors.affiliation: Institut für Organische Chemie und Biochemie der Universität Freiburg Albertstrasse 21, 79104 Freiburg (Germany).
authors.initials: K
authors.lastname: Exner
authors.initials: B
authors.lastname: Großmann
authors.initials: G
authors.lastname: Gescheidt
authors.initials: J
authors.lastname: Heinze
authors.initials: M
authors.lastname: Keller
authors.initials: T
authors.lastname: Bally
authors.initials: P
authors.lastname: Bednarek
authors.initials: H
authors.lastname: Prinzbach