title: Activation of sulfur dioxide by bis[N,N'-diisopropylbenzamidinato(-)]silicon(II): synthesis of neutral six-coordinate silicon(IV) complexes with chelating O,O'-Sulfito or O,O'-dithionito ligands.
abstract: The neutral six-coordinate silicon(IV) complexes 2 and 3 (mixture of cis-3 and trans-3) were synthesized by reaction of the donor-stabilized silylene bis[N,N'-diisopropylbenzamidinato(-)]silicon(II) (1) with SO2 . Compounds 2 and 3 are the first silicon(IV) complexes with chelating sulfito or dithionito ligands, and 3 is even the first molecular compound with a chelating dithionito ligand. Compounds 2 and 3 were structurally characterized by crystal structure analyses and multinuclear NMR spectroscopic studies in the solid state and in solution.
authors.affiliation: Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany).
authors.forename: Konstantin
authors.initials: K
authors.lastname: Junold
authors.forename: Felix M
authors.initials: FM
authors.lastname: Mück
authors.forename: Claudia
authors.initials: C
authors.lastname: Kupper
authors.forename: Johannes A
authors.initials: JA
authors.lastname: Baus
authors.forename: Christian
authors.initials: C
authors.lastname: Burschka
authors.forename: Reinhold
authors.initials: R
authors.lastname: Tacke
keywords: dithionito ligand; silicon; six-coordination; small-molecule activation; sulfur