title: Reactions of large tetraaza-N,N'-dihydroacenes: formation of unexpected adducts and an unstable tetraazahexacene.
abstract: We report the reaction of several N,N'-dihydrotetraazaacenes with oxalylic chloride to give unusual adducts, which were characterized by single-crystal X-ray structures.
authors.affiliation: Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
authors.forename: Jens U
authors.initials: JU
authors.lastname: Engelhart
authors.forename: Benjamin D
authors.initials: BD
authors.lastname: Lindner
authors.forename: Olena
authors.initials: O
authors.lastname: Tverskoy
authors.forename: Manuel
authors.initials: M
authors.lastname: Schaffroth
authors.forename: Frank
authors.initials: F
authors.lastname: Rominger
authors.forename: Uwe H F
authors.initials: UH
authors.lastname: Bunz