changed due to decomposition. These thermal data, together with the equations of Schroeder-van Laar and PrigogineDefay,21 were thus used to construct the ideal binary phase
diagram shown in Figure 3. The measured points for the pure phase materials and the eutectics have been included. The two calculated liquidus curves for the 1:1 and 2:1 cocrystals
are indicated, and it can be seen that these are consistent with the measured eutectic temperatures.