title: Configurationally Stable Chiral Dithia-Bridged Hetero[4]helicene Radical Cation: Electronic Structure and Absolute Configuration.
abstract: A stable chiral hetero[4]helicene radical cation was synthesized and characterized by UV/Vis absorption and EPR spectroscopy, as well as X-ray crystallography. For the first time, a combination of chiroptical methods involving ECD, ORD, and VCD, supported by quantum mechanical predictions, enabled the elucidation of the absolute configuration of such open-shell helical species.
authors.affiliation: Chair of Organic Chemistry I, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen, Germany.
authors.forename: Bettina D
authors.initials: BD
authors.lastname: Gliemann
authors.affiliation: Department of Life Sciences, New York Institute of Technology, 1855 Broadway, New York, NY, 10023, USA.|Department of Chemistry, Columbia University, 3000 Broadway, New York, NY, 10027, USA.
authors.forename: Ana G
authors.initials: AG
authors.lastname: Petrovic
authors.affiliation: Chair of General and Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany.
authors.forename: Eva M
authors.initials: EM
authors.lastname: Zolnhofer
authors.affiliation: Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany.
authors.forename: Pavlo O
authors.initials: PO
authors.lastname: Dral
authors.affiliation: Chair of Organic Chemistry I, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Hampel
authors.affiliation: Department of Chromatography and Electrophoresis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany.
authors.forename: Georg
authors.initials: G
authors.lastname: Breitenbruch
authors.affiliation: Department of Chromatography and Electrophoresis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Schulze
authors.affiliation: Department of Chemistry, Vanderbilt University, TN, 37235, USA, 7330 Stevenson Center, Station B 351822, Nashville.
authors.forename: Vijay
authors.initials: V
authors.lastname: Raghavan
authors.affiliation: Chair of General and Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany.
authors.forename: Karsten
authors.initials: K
authors.lastname: Meyer
authors.affiliation: Department of Chemistry, Vanderbilt University, TN, 37235, USA, 7330 Stevenson Center, Station B 351822, Nashville.
authors.forename: Prasad L
authors.initials: PL
authors.lastname: Polavarapu
authors.affiliation: Department of Chemistry, Columbia University, 3000 Broadway, New York, NY, 10027, USA.
authors.forename: Nina
authors.initials: N
authors.lastname: Berova
authors.affiliation: Chair of Organic Chemistry I, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen, Germany.
authors.forename: Milan
authors.initials: M
authors.lastname: Kivala
keywords: absolute configuration; cations; chiroptical methods; helicenes; radicals