Pentacoordinate silicon(IV): cationic, anionic and neutral complexes derived from the reaction of NHC→SiCl4 with highly Lewis acidic (C2F5)2SiH2

T Böttcher; S Steinhauer; B Neumann; H-G Stammler; G-V Röschenthaler; B Hoge

doi:10.1039/c4cc02583k

Pentacoordinate silicon(IV): cationic, anionic and neutral complexes derived from the reaction of NHC→SiCl4 with highly Lewis acidic (C2F5)2SiH2

Chem Commun (Camb). 2014 Jun 14;50(47):6204-6. doi: 10.1039/c4cc02583k. Epub 2014 Apr 25.

Authors

T Böttcher¹, S Steinhauer, B Neumann, H-G Stammler, G-V Röschenthaler, B Hoge

Affiliation

¹ Universität Bielefeld, Centrum für Molekulare Materialien, Anorganische Chemie II, Universitätsstraße 25, 33615 Bielefeld, Germany. b.hoge@uni-bielefeld.de tobias.bottcher@monash.edu.

PMID: 24764020
DOI: 10.1039/c4cc02583k

Abstract

Addition of NHC→SiCl4 to the highly Lewis acidic bis(pentafluoroethyl)silane ((C2F5)2SiH2) afforded the salt [(NHC)2SiCl2H][(C2F5)2SiCl3] with pentacoordinate silicon in the cation and the anion. The anion represents the first example of a chlorosilicate structurally characterized in the solid state. In this reaction, the long sought pentacoordinate NHC-adduct of silicochloroform was identified as an intermediate and its crystal structure is presented.