6,6′-{[Ethane-1,2-diylbis(azaneylylidene)]bis(methaneylylidene)}bis[(1-oxyl-2,2,5,5-tetramethylpyrrolidine-3-carboxy)phenolato] Nickel(II)

Conductive polymers with TEMPO pendants are considered as a promising class of energy storage materials. However, the rational design of such materials demands for the minimization of the molar mass of the unit. The utilization of the PROXYL stable radical instead of TEMPO may decrease the weight of the monomeric unit and, thus, improve the capacity of the materials. Herein, we report a NiSalen complex with 3-carboxy-PROXYL pendants, designed to decrease the molar mass of the complex. The resulting product was characterized by 1H NMR, electrospray high-resolution mass spectrometry and EPR.