Among the diamine stabilized compounds (figure )), the tert-butyl derivate 7 is with an onset of evaporation of 67.2 °C and a r.m. of 2.8 wt.% the most volatile and most stable representative in this group. The methyl analogue 8 shows a higher rest mass of 9.2 wt.%, as the potential decomposition pathway via β-hydrogen elimination at the MeN group is possible in contrast to 7, where no β-hydrogen is present at the t BuN group. The rapid decomposition of 9, already observed during synthesis and storage, is also observed in TGA resulting in a high r.m. of 61.9 wt.%, while the respective Tvol. must be looked at critically due to the high tendency for decomposition, which affects the mass loss and thus the Tvol. derived by 1 % mass loss.