The reaction required LAG to obtain good reaction yields of 2. A small amount of acetonitrile (0.3 µL/mg) was added to the milling jar prior to milling. While the amount of liquid added is small, the amount of hydrogen is much larger than the hydrogen found in our solid reactants because of the larger mole ratio of hydrogen in the acetonitrile molecule. This is obvious in the significant differences found between Figures and. Figure is the pre-milling mixture without the acetonitrile while figure is the pre-milling mixture with the acetonitrile added. Figure , without acetonitrile, shows the addition of both reactants, with the 4,4'-dimethylbenzil signal being very prominent (peak E). The T1 is long at 55.1 s and a typical short T2* for these samples at 8 µs. In Figure , the signal from the solvent overpowers the rest of the signal (peak A). There are many artifacts caused by chemical shift of the solvent, as also observed distortion in the of its FID (supporting information Figures and). The T2* observed from acetonitrile is significantly longer than the solid samples, at 716 µs for the most intense peak (peak A). T2* with this length makes the data unable to be processed using non-exponential methods. The T1 of acetonitrile was measured to be 2.65 s, shorter than the solid samples.