title: Poly-Lewis-acids based on bowl-shaped tribenzotriquinacene.
abstract: Several derivatives of bowl-shaped tribenzotriquinacenes with Lewis-acidic atoms are reported. Six acetylene functions were attached to the benzene rings and these can carry six SnMe3or SiMe3groups. Direct functionalization of the benzhydrylic positions with the silyl groups of tribenzotriquinacene in in situ Grignard reactions is reported. Such silyl groups carry various substituents; the Si-H functional species were shown to be convertible into Si-F, Si-Cl and Si-Br functional compounds. The benzhydrylic positions were also substituted by allyl and p-iodo-phenyl functions; the first were further functionalized with a variety of silyl groups (SiCl3, SiMeCl2, SiF3, SiMeF2), the latter with trimethylsilylethynyl substituents and this product desilylated to a tris-(p-ethynyl-phenyl) tribenzotriquinacene. The complexation of a SbCl3unit by a tribenzotriquinacene derivative with a new chelating tris-arene binding motif of the antimony atom is also reported.
authors.affiliation: Inorganic and Structural chemistry, Centre for Molecular Materials CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany. mitzel@uni-bielefeld.de.
authors.forename: Janek
authors.initials: J
authors.lastname: Tomaschautzky
authors.affiliation: Inorganic and Structural chemistry, Centre for Molecular Materials CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany. mitzel@uni-bielefeld.de.
authors.forename: Beate
authors.initials: B
authors.lastname: Neumann
authors.affiliation: Inorganic and Structural chemistry, Centre for Molecular Materials CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany. mitzel@uni-bielefeld.de.
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Stammler
authors.affiliation: Inorganic and Structural chemistry, Centre for Molecular Materials CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany. mitzel@uni-bielefeld.de.
authors.forename: Norbert W
authors.identifier: http://orcid.org/0000-0002-3271-5217
authors.initials: NW
authors.lastname: Mitzel