The 1:1 THF/Et3N solutions begin to decompose within 2 days at 25 °C but THF solutions can be stored for at least 12 months in a -80 °C freezer. Quenching the residual potassium should be done with care as described in the experimental section. by TMEDA. The absence of monomers is contrary to conventional wisdom but is not surprising in the context of NaHMDS-TMEDA and NaPTA-TMEDA solvates showing preferences for dimers as well. 2b,d The Job Plot in Figure includes a parametric fit to the dimer model described by eq 4.