All reagents and solvents were of high purity grade and were purchased from Sigma-Aldrich Co., and TCI. H liquid NMR spectra were recorded on a Bruker AVANCE 300 spectrometer (300 MHz). Dimethylsulfoxide-d 6 (DMSO-d 6 ) was used as solvent. Tetramethylsilane was used as the internal reference. Chemical shifts (δ) are quoted in ppm and the coupling constants (J) in Hz. Infrared spectra were recorded on an ATR FT-IR GALAXY SERIES FT-IR 7000 (Mattson Instruments) spectrometer in the 4000-400 cm -1 range using powdered samples. UV/visible absorption spectra were recorded on a Jasco V-780 spectrometer. TLC analyses were performed on commercial glass plates bearing a 0.25-mm layer of Merck Silica gel 60F254. Preparative separations were performed by silica gel chromatography (Wako gel C-200). The electrochemical experiments were performed on an Autolab electrochemical workstation (PGSTAT302N with FRA32M Module) connected to a personal computer that uses Nova 2.1 electrochemical software. A typical three-electrode experimental cell equipped with a glassy carbon as the working electrode, platinum wire as the counter electrode, and silver wire as the pseudoreference electrode was used for the electrochemical characterization. The electrochemical properties were studied by measuring CV under an inert (N 2 ) atmosphere at different scan rates in previously N 2 -purged 0.1 M TBAPF 6 /CH 2 Cl 2 solutions. Ferrocene (Fc) was added as an internal standard upon completion of each experiment. All potentials are reported in V versus Fc/Fc + . DFT calculations. DFT calculations were performed with Gaussian 09. For this, different molecular structures with different symmetry groups were generated and minimized at the B3LYP-6-31G(d,p) and the B3LYP-6-31G(d,p)-CH 2 Cl 2 levels. All minima were checked for the presence of imaginary frequencies. In addition, selected structures were also reoptimized at the M06-2X-6-31G(d,p)-CH 2 Cl 2 giving similar results. The electronic structure, HOMO and LUMO levels, and TD-DFT calculations were performed at the B3LYP-6-311+G(2d,p)-CH 2 Cl 2 level. Vertical ionization potentials and electron affinity calculations were also performed yielding very similar values to the HOMO and LUMO energies reported.