The injection temperature was set to 105 °C and the flask was refilled with nitrogen. In a nitrogen atmosphere glovebox, 7.5 mL of dry toluene was charged with 350 µL of hexamethyldisilathiane. This solution was removed from the glovebox (<0.1 ppm O2, <0.5 ppm H2O) and injected into the reaction flask with minimal exposure to air. Upon injection, the reaction flask was immediately removed from the heat plate and allowed to air cool. Upon reaching room temperature, the reaction was washed with acetone (4x volume of acetone was added and centrifuged at 8800xg for 2 mins). The resulting pellet was redispersed in hexanes (~30 mL) and washed with acetone (x4 volume of acetone was added and centrifuged at 8800xg for 2 mins). The final pellet was redispersed in hexanes (~15 mL) and stored in the glovebox until use.