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Updated: Jun 13, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Pseudohalonium ions: [Me3Si-X-SiMe3]+ (X=CN, OCN, SCN, and NNN)
Axel Schulz1, Alexander Villinger
1Institut für Chemie, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany. axel.schulz@uni-rostock.de
Abstract:
By utilizing reaction mixtures, such as Me(3)Si-X/[Me(3)Si-X-SiMe(3)](+) (X=CN, OCN, SCN, and NNN), it was possible to prepare the first examples of bissilylated pseudohalonium cations in high yields. The structure and bonding of a whole series of salts containing pseudohalonium cations is discussed on the basis of experimentally observed (X-ray diffraction, Raman, and IR spectroscopy, and mass spectrometry) and theoretically obtained data. Salts containing pseudohalonium cations are only stable in the presence of weakly coordinating anions, such as the well-known tetrakis(pentafluorophenyl)borate, [B(C(6)F(5))(4)](-).
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