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

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

T. Böttcher,*^a S. Steinhauer,^a B. Neumann,^a H.-G. Stammler,^a G.-V. Röschenthaler*^b and B. Hoge*^a

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* Corresponding authors

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

^b Jacobs University Bremen, School of Engineering and Science, Campus Ring 1, 28759 Bremen, Germany
E-mail: g.roeschenthaler@jacobs-university.de

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.

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DOI: https://doi.org/10.1039/C4CC02583K
Article type: Communication
Submitted: 08 Apr 2014
Accepted: 15 Apr 2014
First published: 15 Apr 2014

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Chem. Commun., 2014,50, 6204-6206

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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 and B. Hoge, Chem. Commun., 2014, 50, 6204 DOI: 10.1039/C4CC02583K

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Chemical Communications