title: Tridentate Lewis acids with phenyl substituted 1,3,5-trisilacyclohexane backbones.
abstract: The 1,3,5-trisilacyclohexane skeleton [CH2Si(Ph)(C2H)]3 equipped with three ethynyl groups was synthesised and functionalised to afford tridentate Lewis acids with directed functions. Hydroboration with HB(C6F5)2 yielded the ethenylborane {CH2Si(Ph)[C2H2B(C6F5)2]}3, while metalation with gallium organyls afforded {CH2Si(Ph)[C2Ga(R)2]}3 (R = Me, Et). The new compounds were identified by elemental analyses, multi-nuclear NMR spectroscopy and IR spectroscopy. Crystal structures were obtained for all-cis-[CH2Si(Ph)(OMe)]3, cis-trans-[CH2Si(Ph)(Cl)]3, all-cis-[CH2Si(Ph)(H)]3 and all-cis-[CH2Si(Ph)(C2H)]3.
authors.affiliation: Bielefeld University, Faculty of Chemistry, Chair of Inorganic and Structural Chemistry, Centre for Molecular Materials CM2, Universtitätsstraße 25, 33615 Bielefeld, Germany. Mitzel@uni-bielefeld.de.
authors.forename: Eugen
authors.initials: E
authors.lastname: Weisheim
authors.affiliation: Bielefeld University, Faculty of Chemistry, Chair of Inorganic and Structural Chemistry, Centre for Molecular Materials CM2, Universtitätsstraße 25, 33615 Bielefeld, Germany. Mitzel@uni-bielefeld.de.
authors.forename: Lisa
authors.initials: L
authors.lastname: Bücker
authors.affiliation: Bielefeld University, Faculty of Chemistry, Chair of Inorganic and Structural Chemistry, Centre for Molecular Materials CM2, Universtitätsstraße 25, 33615 Bielefeld, Germany. Mitzel@uni-bielefeld.de.
authors.forename: Beate
authors.initials: B
authors.lastname: Neumann
authors.affiliation: Bielefeld University, Faculty of Chemistry, Chair of Inorganic and Structural Chemistry, Centre for Molecular Materials CM2, Universtitätsstraße 25, 33615 Bielefeld, Germany. Mitzel@uni-bielefeld.de.
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Stammler
authors.affiliation: Bielefeld University, Faculty of Chemistry, Chair of Inorganic and Structural Chemistry, Centre for Molecular Materials CM2, Universtitätsstraße 25, 33615 Bielefeld, Germany. Mitzel@uni-bielefeld.de.
authors.forename: Norbert W
authors.initials: NW
authors.lastname: Mitzel