Emily A Murray-Nobbs, Jarrod R Thomas, Cameron M Gould, John M Cusick, Scott A Sulway
The safe and robust synthesis of sodium and potassium salts of the [B(C6F5)4]- anion (Na[BArF20], 1-Na and K[BArF20], 1-K) via an improved method is reported. The implementation of the improved synthetic route to other tetraarylborate salts is carried out, which includes the synthesis of Na[B({CF3}C6H4)4] (Na[BArF12], 2) and Na[B({tBu}C6H4)4] (Na[BArtBu4], 3). The solid-state structure of the THF-solvated adduct of 2 is reported. 1-Na, 1-K, 2 and 3 are fully characterized by 1H, 11B, and 19F NMR spectroscopy.