The Reaction between Sulfur Dioxide and Hexamethyldisilazane. 3. The Characterization of Ammonium (Trimethylsilyl)sulfite

Article abstract of DOI:10.1021/ja00408a040

The reaction between ((CH3)3Si)2NH and SO2 results in the formation of an anionic solid with empirical formula NH4(CH3)3SiOSO2 which readily "sublimes" at ambient temperature.Although (trimethylsilyl)ammonium bisulfite is a logical choice for a molecular formula, IR, NMR, and XPS data rule out the presence of RNH3⁺ and HSO3^- ions.These data, along with a consideration of the solution behavior of this unique material, provide strong evidence that the substance is ammonium (trimethylsilyl)sulfite, with the silicon bonded to oxygen rather than sulfur.