The structure factors, F(Q), of [TBuA][Mn(dca)3] cease to contain sharp features above 190 °C, indicating the loss of long-range crystalline order at this temperature (Fig. , complete dataset shown in Fig. ). This temperature coincides with the Tm observed in DSC experiments (Tm-onset = 185 °C). No further significant changes in the F(Q)s occurred until the maximum temperature of 258 °C reached in the experiment. A similar experiment for [TPnA][Mn(dca)3] demonstrated a loss of sharp features from the F(Q) at 169 °C, which again agrees with the DSC experiments (Tm-onset = 149 °C) (Fig. ).