Tetrakis(dimethylamino)ethylene (TDAE) is an organic compound with the formula C2(N(CH3)2)4. It is a colorless liquid. It is classified as an enamine. Tetrakis(dimethylamino)ethylene (TDAE) is an organic compound with the formula C2(N(CH3)2)4. It is a colorless liquid. It is classified as an enamine. TDAE reacts with oxygen in a chemiluminscent reaction to give tetramethylurea TDAE is an electron donor. It forms a charge transfer salt with buckminsterfullerene: