Pentacoordinate silicon(IV): cationic, anionic and neutral complexes derived from the reaction of NHC→SiCl4 with highly Lewis acidic (C2F5)2SiH2.
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.
Universität Bielefeld, Centrum für Molekulare Materialien, Anorganische Chemie II, Universitätsstraße 25, 33615 Bielefeld, Germany. b.hoge@uni-bielefeld.de tobias.bottcher@monash.edu.
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Böttcher
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Steinhauer
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Neumann
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Stammler
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Röschenthaler
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Hoge