All five solvents were studied by thermal gravimetric analysis (TGA) to determine the thermal stability of the various conformations. A small aliquot of each molecule (ca. 15-20 mg) was loaded into an alumina TGA pan and temperature was ramped to 750°C at 10°C/min under 100 mL/min air while the sample mass was recorded. The first derivative maximum (Tdec) for each solvent was taken as a measure of the point at which the maximum rate of sample loss was experienced.