Lithiation of the diaminopyridine protio-ligand MeC(2-C<sub>5</sub>H<sub>4</sub>N){CH<sub>2</sub>N(H)Mes}<sub>2</sub>(Mes = 2,4,6-C<sub>6</sub>H<sub>2</sub>Me<sub>3</sub>)
Acta crystallographica. Section E