The goal of this study is to identify molecules with an energy storage density that is as high as possible and a half-life of that is at least as long as the parent compound (shown in Figure ) and preferably longer. We note that, according to transition state theory, even a modest 10 kJ/mol increase in the activation free energy corresponds to a 56 fold increase in the half life, which is 3-39 hours for the parent compound (depending on solvent). Even high level ab initio calculations can easily give an error of ±10 kJ/mol for barrier heights, so molecules with large storage densities but computed barrier heights similar to the parent compound are potentially worth testing experimentally.