Reactivity of the Donor-Stabilized Silylenes [iPrNC(Ph)NiPr](2)Si and [iPrNC(NiPr2)NiPr](2)Si: Activation of CO2 and CS2

Felix M. Mück, Johannes A. Baus, Marco Nutz, Christian Burschka, Jordi Poater, F. Matthias Bickelhaupt, Reinhold Tacke

Research output: Contribution to JournalArticleAcademicpeer-review


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 CS22− 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.
Original languageEnglish
Pages (from-to)16665-16672
JournalChemistry: A European Journal
Issue number46
Publication statusPublished - 9 Nov 2015


  • amidinato ligands
  • coordination chemistry
  • guanidinato ligands
  • silicon compounds
  • silylenes


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