The Intercalation of <i>N</i>,<i>N</i>,<i>N′</i>,<i>N′</i>-Tetramethyl-ethane-1,2-diamine (tmeda) into C<sub>6</sub>Li and C<sub>12</sub>Li

Liquid <i>N</i>,<i>N</i>,<i>N′</i>,<i>N′</i>-tetramethyl-ethane-1,2-diamine (tmeda) was intercalated into preprepared C<sub>6</sub>Li or C<sub>12</sub>Li. X-ray diffraction from the ternary compound indicates an identity period of 11.5 Å. The <sup>13</sup>C NMR line shifts show that tmeda molecules form a screen between the graphene planes and the lithium ions. Small-angle X-ray scattering showed that no higher structural ordering was present but revealed a progressive roughening of the surfaces with successive intercalation of lithium and amine into the graphite galleries.