OS7-3-4 Electrochemical hydrogenation of dinitrogen to ammonia using titanocene dichloride in ionic liquid

The conversion of dinitrogen to ammonia under mild conditions is of great importance. The redox property of dinitrogen in P_<14>NTf_2 ionic liquid containing Cp_2TiCl_2 under dinitrogen atmosphere was studied, and the effect of coordination of ^-NTf_2 anion to Cp_2TiCl_2 was discussed. Electrolysis of dinitrogen in water divided with Nafion ^[○!R]212 with this system showed the generation of ammonia. Controlled-potential electrolysis of dinitrogen to ammonia at -2.65 V (vs. Fc/Fc^+) was carried out, the maximum current efficiency being 4.68 %.