together with trace amounts of other unknown species that we could not identify. These results were obtained even under strict temperature control in the attempt to minimize decomposition reactions (see ESI, Figures and). Similarly, when 3-Ca was reacted under the same conditions and 1 H NMR analysis reaction mixtures revealed the presence of unreacted starting material and K[N(Mes)(SiMe3)], together with other unknown species (see ESI, Figures and). We also attempted the reductions of 1-Sr and 3-Sr obtaining similar results (Figures and). Furthermore, we attempted the reduction of 4 in various conditions, but also in this case we either recovered unreacted starting material or obtained an intractable mixture of products (see ESI, Figures and).