title: Bis[N,N'-diisopropylbenzamidinato(-)]silicon(II): Lewis acid/base reactions with triorganylboranes.
abstract: Reaction of the donor-stabilized silylene 1 (which is three-coordinate in the solid state and four-coordinate in solution) with BEt3 and BPh3 leads to the formation of the Lewis acid/base complexes 2 and 3, respectively, which are the first five-coordinate silicon compounds with an SiB bond. These compounds were structurally characterized by crystal structure analyses and by multinuclear NMR spectroscopic studies in the solid state and in solution. Additionally, the bonding situation in 2 and 3 was analyzed by quantum chemical studies.
authors.affiliation: Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84609.
authors.forename: Konstantin
authors.initials: K
authors.lastname: Junold
authors.forename: Johannes A
authors.initials: JA
authors.lastname: Baus
authors.forename: Christian
authors.initials: C
authors.lastname: Burschka
authors.forename: Célia
authors.initials: C
authors.lastname: Fonseca Guerra
authors.forename: F Matthias
authors.initials: FM
authors.lastname: Bickelhaupt
authors.forename: Reinhold
authors.initials: R
authors.lastname: Tacke
keywords: Lewis acids; Lewis bases; bonding analysis; boron; coordination chemistry; silicon