title: Reactivity of the Donor-Stabilized Silylenes [iPrNC(Ph)NiPr]2 Si and [iPrNC(NiPr2 )NiPr]2 Si: Activation of CO2 and CS2.
abstract: Activation of CO2 by the bis(amidinato)silylene 1 and the analogous bis(guanidinato)silylene 2 leads to the structurally analogous six-coordinate silicon(IV) complexes 4 (previous work) and 8, respectively, the first silicon compounds with a chelating carbonato ligand. Likewise, CS2 activation by silylene 1 affords the analogous six-coordinate silicon(IV) complex 10, the first silicon compound with a chelating trithiocarbonato ligand. CS2 activation by silylene 2, however, yields the five-coordinate silicon(IV) complex 13 with a carbon-bound CS2 (2-) ligand, which also represents an unprecedented coordination mode in silicon coordination chemistry. Treatment of the dinuclear silicon(IV) complexes 5 and 6 with CO2 also affords the six-coordinate carbonatosilicon(IV) complexes 4 and 8, respectively.
authors.affiliation: Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84609.
authors.forename: Felix M
authors.initials: FM
authors.lastname: Mück
authors.affiliation: Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84609.
authors.forename: Johannes A
authors.initials: JA
authors.lastname: Baus
authors.affiliation: Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84609.
authors.forename: Marco
authors.initials: M
authors.lastname: Nutz
authors.affiliation: Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84609.
authors.forename: Christian
authors.initials: C
authors.lastname: Burschka
authors.affiliation: VU University Amsterdam, Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM), De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands).
authors.forename: Jordi
authors.initials: J
authors.lastname: Poater
authors.affiliation: VU University Amsterdam, Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM), De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands). f.m.bickelhaupt@vu.nl.|Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen (The Netherlands). f.m.bickelhaupt@vu.nl.
authors.forename: F Matthias
authors.initials: FM
authors.lastname: Bickelhaupt
authors.affiliation: Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84609. r.tacke@uni-wuerzburg.de.
authors.forename: Reinhold
authors.initials: R
authors.lastname: Tacke
keywords: amidinato ligands; coordination chemistry; guanidinato ligands; silicon compounds; silylenes