Perstannylated Ammonium and Phosphonium Ions: Organometallic Onium Ions That Are also Base-Stabilized Stannylium Ions
This work was supported by the Deutsche Forschungsgemeinschaft, the Ministerium für Schule, Weiterbildung und Forschung des Landes Nordrhein-Westfalen and by the Fonds der Chemischen Industrie.
Abstract
Weakly coordinating anions and nonpolar solvents facilitate the isolation of the first NH4+ and PH4+ derivatives completely substituted with main group organometallic units. The triflate and BPh4 salts of the [E(SnMe3)4]+ ions (E=N, P) undergo a rapid Me3Sn+ ion exchange in THF and thus represent base-stabilized stannylium ions. The structure of the cation in [N(SnMe3)4]+[OSO2CF3]− is depicted.